The psychological impact of COVID-19 and restrictive measures in the world

Background In a short time, the COVID-19 pandemic turned into a global emergency. The fear of becoming infected and the lockdown measures have drastically changed people's daily routine. The aim of this study is to establish the psychological impact that the COVID-19 pandemic is entailing, particularly with regards to levels of stress, anxiety and depression, and to the risks of developing Post-Traumatic Stress Disorder (PTSD). Methods The study, carried out with a sample of 1612 subjects distributed in seven countries (Australia, China, Ecuador, Iran, Italy, Norway and the United States), allowed us to collect information about the psychological impact of COVID-19. Results The findings of this study show that the levels of stress, depression and anxiety, as well as the risks of PTSD, are higher than average in over half of the considered sample. The severity of these disorders significantly depends on gender, type of outdoor activities, characteristics of their homes, eventual presence of infected acquaintances, time dedicated to looking for related information (in the news and social networks), type of source information and, in part, to the level of education and income. Conclusions We conclude that COVID-19 has a very strong psychological impact on the global population. This appears to be linked to the coping strategies adopted, level of mindful awareness, socio-demographic variables, people's habits and the way individuals use means of communication and information.


Introduction
The first cases of the Coronavirus Disease 2019 (COVID-19) were reported in December 2019 in China, and by January 2020 a novel coronavirus (SARS-CoV2) was clearly identified, as indicated in Huang et al. (2020) and in Acter et al. (2020). Coronaviruses originate from intestinal and respiratory infections and until now two other major coronavirus outbreaks have occurred, the Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV) in 2003 and the Middle East Respiratory Syndrome Coronavirus (MERS-CoV) in 2012 Bonilla-Aldana et al., 2020;Wang et al., 2020b).
As described by the European centre for Disease Prevention, 2020 and Control and by Sohrabi et al. (2020), typical signs and symptoms of COVID-19 patients include fever, dry cough, tachypnea, shortness of breath, asthenia, headache, rhinorrhea, gustatory dysfunction and sore throat. Moreover, although some patients are asymptomatic, some may show a clinical worsening leading to fatality (Lotfi et al., 2020;Tabata et al., 2020).
After initially spreading in China, the pandemic quickly had stark repercussions in Asia, Europe and then the rest of the world . On 30 January 2020 The World Health Organization (WHO) officially declared COVID-19 as a Public Health Emergency of International Concern (Sohrabi et al., 2020). Progressively, the pandemic has entailed a tremendous amount of reported cases and deaths, namely approximately 21 million infected people and 755,000 deaths reported across 188 countries up till 15 August 2020. By 30 April 2020, at the end of the online survey administered in this research, there were over 3.1 million confirmed cases and almost 250,000 deaths (WHO, 2020a(WHO, , 2020b(WHO, , 2020c. The coronavirus outbreak spread quickly across the world due to the large amount of international travels and relative ease of transmission Shuja et al., 2020). In particular, major ways of infection can occur by direct contact with an infected person and droplets or by indirect contact with infected surfaces in the environment (Lotfi et al., 2020;Ningthoujam, 2020).
National lockdowns have been the solution adopted by many countries to slow down the pandemic due to the current absence of vaccine and medical interventions. Furthermore, the economic consequences were added to the existing health and social crisis (Bonaccorsi et al., 2020;Brooks et al., 2020;Singh et al., 2020); in that sense some authors have even compared this financial crisis to the Great Depression of 1929 (Baker et al., 2020).
The intensive efforts to keep up social distancing have invariably been accompanied by social isolation (Banerjee and Rai, 2020); in addition, negative perceptions and fears associated with disease have increased several mental health disorders (Shuja et al., 2020). In fact, various studies point out a strong correlation between natural disasters and epidemics and mental illnesses like depression, anxiety, post-traumatic stress disorder (Brooks et al., 2020;Kar and Bastia, 2006;Liu et al., 2012;Mak et al., 2009;Sim and Chua, 2004;Sprang and Silman, 2013;Wu et al., 2005).
It is to stress that patients with a previous disorder, for example anxiety, may worsen their symptoms (Bystritsky et al., 2020). Moreover, it is known that psychological factors and personal beliefs are related with public health action to curtail the transmission (Leung et al., 2003); low social and mental support and a high perception of risk appear to be associated with psychological symptoms (Wu et al., 2005).
Together, these findings seem to be confirmed by recent research regarding social and psychological impact of SARS-Cov-2 infection in specific countries (Liu et al., 2020;Mazza et al., 2020;Serafini et al., 2020;Tabata et al., 2020;Wang et al., 2020d), but most of these explorations have been conducted on doctors and healthcare workers (for example, Tan et al., 2020).
According to the scientific literature, it is also known that the psychological symptoms might be related with different factors, like temperament and attachment style (Moccia et al., 2020), social support (Cao et al., 2020), inadequate information (Brooks et al., 2020;Serafini et al., 2020), coping strategies , rumors in social media (Roy et al., 2020) and precautionary measures such as face mask use (Wang et al., 2020c) and social distance.
Mental health interventions, like Cognitive Behavioral Therapy (CBT) or Eye Movement Desensitization and Reprocessing (EMDR), are precious at an early stage because the lack of a psychological support seems to be an important risk factor (Kar e Bastia, 2006;Morganstein and Ursano, 2020), especially considering that an intermediate range of traumatic experience seems to predict a subsequent growth (Butler et al., 2005).
In addition to the stark consequences related to human health and individual well-being, the COVID-19 pandemic has also entailed several major effects encompassing society and environment, i.e. causing deep modifications related to individual mobility (Barbieri et al., 2020a;De Vos J., 2020;Wells et al., 2020) and environmental pollution (Barbieri et al., 2020b;Le Quéré et al., 2020;Shakil et al., 2020).
For these reasons, this research aims to investigate the psychological impact of the current COVID-19 pandemic in reference to several sociodemographic and personality factors in seven countries on five continents: Australia, China, Ecuador, Iran, Italy, Norway and the United States. This is important to better characterize this historical moment according to a global framework as well as understanding which factors most affect people's quality of life.

Setting, participants and procedure
This study adopted a cross-sectional survey designed to analyze the psychological impact of COVID-19 restrictive measures in the abovementioned countries.
The anonymous online survey was administered using Google Forms and WenJuanXing platforms and distributed among adult students and workers between 17-04-2020 and 30-04-2020. The personal data collected were processed anonymously and aggregated for the analysis performed in this study. The research was conducted in compliance with the ethical principles of the Helsinki Declaration for human subjects research. The study, consisting of a series of queries related to individuals during the pandemic emergency, was considered "at minimum risk" for the participants, who were free to refuse participation or abandon the survey at any time.

Variables and measures
The online survey has been administered in seven countries and different aspects have been investigated, the questionnaire was subdivided into three major parts accordingly: (1) socio-demographic information, (2) use of free time, (3) use of information media and technologies. Overall, the survey focused particularly on awareness, coping strategies, and psychological impact of COVID-19.
The socio-demographic part gathered information about the gender, nationality, age, education, type of dwelling, knowledge of other infected people. The use of free time included some questions like: "Do you do some outdoor activities such as sport or walks?", "Do you go out to do some non-essential activities?", "How often do you look for information about the contagion?". The use of information media and communication presented some questions like: "What is your main source of communication?" or "How long do you use social media?".
Psychodiagnostics self-administered tests were employed to measure awareness, coping strategies and psychological impact of COVID-19, as already performed in literature (Moccia et al., 2020;Wang et al., 2020e) and clinical practice to evaluate personal characteristics and presence of psychopathology.
The Mindfulness Awareness Attention Scale (MAAS) is a 15-item scale designed to assess individual differences of attention and awareness. Higher scores correspond to higher levels of dispositional mindfulness awareness. Subject answer using a 6-point Likert scale ranging from 1 to 6 (Brown and Ryan, 2003).
The Event Scale-Revised (IES-R) is a self-report questionnaire that is used to define Post-Traumatic Stress Disorders (PTSD). The IES-R is composed of 22 items on 5-point Likert scale ranging from 0 to 4 which constitute three subscales: intrusion, hyperarousal and avoidance. A total score of 33 is evaluated as the best cut-off associated to a probable diagnosis of PTSD.
The Patient Health Questionnaire (PHQ-9) is a short scale on 4-point Likert (0-3) and it is used for depression screening and diagnosis. It is composed of 9 items with the addition of another question about the functional impairment in the activities of daily life. Only the first 9 items contribute to the final score in a range of 0 to 27 (Kroenke et al., 2001;Spitzer et al., 1999). The scores determine ranges for absence of depression (0-4), mild depression (5-9), moderate (10-14), moderately severe (15)(16)(17)(18)(19), severe depression (20 or above).
The PSS10 is one of the most used psychological tests to measure perceived stress and it is based on 5-point Likert scale (0-4). A scoring ranging from 0 to 13 can be considered low stress. A range between 14 and 26 can indicate moderate stress. Total score of 27 or above represents a high perceived stress (Cohen et al., 1983;Cohen and Williamson, 1988).
The Brief-COPE is a short version of the COPE (Coping Orientation to Problems Experienced) inventory, this is a self-report questionnaire that identifies typical coping strategies when facing difficult situations. Two subscale possibilities have been identified: a subscale measuring avoidance strategies and another subscale assessing approach strategies (Carver, 1997;Eisenberg et al., 2012;Meyer, 2001).

Statistical analysis
Data were analyzed using SPSS Version 25 and 26 (SPSS IBM, Armonk, NY, USA).
The method used in the study was the analysis of the covariance (ANCOVA), that combines the analysis of the variance (ANOVA) and the linear regression on the covariates.
Since the normality assumptions necessary to perform the analysis of the covariance (ANCOVA) were not respected, the techniques of bootstrap with the accidental simulation of Mersenne Twister were also considered (Delucchi and Bostrom, 2004;Hosseini et al., 2017;Wehrens et al., 2000;Wright et al., 2011); literature indicates that a number of 500 bootstrap extractions are sufficient for correctness of the resample (Deng et al., 2013).
Adopting the resample bootstrap, t-tests with the correction of Bonferroni for multiple comparisons were also requested, thus identifying the differences in groups means (MD) with a conservative approach.
The statistical analysis was conducted on a sample of 1612 subjects distributed in seven countries. Firstly, the descriptive statistics related to the main socio-demographic variables were calculated. The possibility to estimate the models on two levels was hypothesized, considering the sample like a hierarchical structure with countries as clusters. With the application of a mixed model with random intercept and random effects of the coefficient's explicative variables, the non-significance of the random components between the countries was characterized. Therefore, the applied ANCOVA model was used to estimate the regressors fixed effects of the explanatory variables including the fixed effects of the country. The model included the study of the different areas presented in subSection 2.2 dealing with the psychological consequences on stress, depression, anxiety and PTSD. The same analysis was performed six times to predict the means of the dependent variables linked to the psychopathological symptoms. In each model, the variables related to coping strategies (Brief-COPE) and mindful awareness (MAAS) were identified as covariates.
Among the cultural and economic factors, the survey collected information regarding the perceived family income, the employment (study, job or none), and the education. In the interviewed sample, 11.8% of the respondents considered themselves in the low-income group, 22.2% in the medium-low, 50.1% in medium, 14.1% in medium-high, and only 1.7% in the high one. The unemployed interviewees were 117 (7.3%) and students and workers were 1450 (90%), 44 respondents (2.7%) did not declare their job status. The education of the interviewees largely spanned from High school to Master degree (80.9%), 1.3% had education below Middle school, 14.8% declared a Ph.D. or to be attending Post graduated school, 48 interviewees did not answer.
In the IES-R scale (Fig. 4), 481 subjects (29,8%) receive scores that can be considered as being in the norm, 250 (14,3%) are characterized by a mild psychological impact and borderline scores indicating the possibility of a partial PTSD or some of the symptoms, 136 (8,5%) receive scores indicating moderate psychological impact and probable diagnosis of PTSD and 745 (46,8%) are related to scores showing severe psychological impact and PTSD diagnosis.
In the MAAS scale, the sample of subjects received an average score of 61,16 (SD = 13.28) in levels of attention and awareness. In the URCS scale, the average sample score of 5,62 (SD = 1.24) indicates a high level of relationship closeness with family members.
The scores related to the Brief-COPE queries dealing with coping strategies, on the other hand, show a greater use of approach strategies (M = 35.40, SD = 6.23) compared to avoidance strategies (M = 26.15, SD = 5.91).

Sociodemographic characteristics and psychological impact
The DASS-21, IES-R, PSS10 and PHQ-9 variables are significantly linked to the particular countries (Table 1, Table 3). The levels of posttraumatic symptoms in the IES-R Scale are significantly higher in Iran      In the DASS-21 Depression Subscale, the scores of the participants in Italy are considerably higher (M = 18.49, SE = 1.23) than in all other countries, except for Norway which has very similar results (M = 16.56, SE = 1.27). Norway has significantly higher depression levels than the United States (MD = 2.30, p = .42, 95% CI: 0.043 to 4.45), Iran (MD = 2.57, p = .04, 95% CI: 0.28 to 5.05) and China (MD = 6.95, p = .002, 95% CI: 4.67 to 9.54). The evaluated depression levels of the Chinese participants are noticeably lower (M = 9.62, SE = 1.22) than those of participants from all other countries. Even in this case the results seem to be confirmed by the PHQ-9 Depression Scale, at least with regards to Italy and China. In fact, it is possible to notice that Italy is the country that suffers from the highest levels (M = 10.44, SE = 0.78), which are significantly higher than Ecuador (MD = 1.68, p = .004, 95% CI: 0.53 to 2.95), Iran (MD = 1.07, p = .042, 95% CI: − 0.03 to 2.05) and China (MD = 4.31, p = .002, 95% CI: 3.40 to 5.20). The Chinese participants had the lowest levels (M = 6.13, SE = 0.80) by far in this variable.
The level of education is not, however, linked to any significant differences in stress and anxiety levels in the DASS-21, PSS10, PHQ-9 and IES-R Scales. The type of occupation of the participants is not connected to any significant differences in the DASS-21, PSS10, PHQ-9 and IES-R Stress, Anxiety and Depression Subscales.
In the same way, having dependent sons or daughters does not seem to be related to any differences in the scores in the DASS-21, PSS-10 and PHQ-9 subscales. The only exception is in the IES-R Scale where the respondents not having sons or daughters (M = 34.63, SE = 1.89) have significantly lower scores (B = − 2.88, p = .008, 95% CI: − 4.77 to − 0.90) than those who have at least one child.
With regards to the characteristics of the dwelling in which the participants live and they spent their time in quarantine in, there are no important differences relating to the DASS-21, IES-R, and PHQ-9 Stress and Anxiety subscales. On the other hand, the survey participants not having access to open-air spaces (shared or private) had significantly higher scores in the DASS-21 Depression Subscale (M = 15.78, SE = 1.27) than those who had the use of balconies and/or terraces (MD = 1.88, p = .026, 95% CI: 0.25 to 3.55) and private garden (MD = 1.50, p = .05, 95% CI: − 0.02 to 3.01). Even in the PSS10 Scale, those who stated that they did not have the use of open-air spaces had significantly higher scores (M = 19.52, SE = 1.79) than those who had the use of balconies and/or terraces (MD = 1.38, p = .01, 95% CI: 0.41 to 2.28) and private garden (MD = 1.25, p = .014, 95% CI: 0.31 to 2.16).
Being acquainted with someone who is infected with COVID-19 is a significant psychological factor in the DASS-21 Stress and Anxiety Subscales and in the IES-R Trauma scale. Considering the DASS-21 Stress subscale, the evaluated average score of subjects who know at least one infected person (M = 16.59, SE = 1.26) is typically higher than those who do not know anyone who is infected (B = 1.17, p = .036, 95% CI: 0.05 to 2.21). In the DASS-21 Anxiety subscale, those who know at least one infected person typically have a higher score (M = 11.19, SE = 1.16) than those who do not know anyone who is infected (B = 1.27, p = .012, 95% CI: 0.26 to 2.16). In the IES-R Trauma Scale, we can see how subjects who know infected people have a higher average score (M = 37.11, SE = 1.97) than those who do not know anyone who is infected (B = 2.07, p = .008, 95% CI: 0.47 to 3.67). On the other hand, no significant differences can be seen in the other scales.

Use of free-time and of means of information and communication
Taking into consideration the activities carried out during quarantine, going out for a walk or for physical exercise and going out for buying non-essential goods were not significantly associated to score differences in the DASS-21, PHQ-9 and PSS10 scales while. On the other hand, those who went out for a walk or for physical exercise showed a significantly higher score (M = 37.36, SE = 1.93) in the IES-R Scale than those who did not (B = 2.57, p = .01, 95% CI: − 0.66 to 4.61). Going out for other activities, such as shopping, does not appear to be linked to any significant variation in scores.
With regards to the amount of time spent in searching for information about the virus infection, on the DASS-21 Stress Subscale we can see that those who search for information between two and five times a week have an evaluated average score (M = 14.74, SE = 1.26) that is significantly lower than those who search for information two or three times a day (MD = − 1.47, p = .040, 95% CI: − 2.84 to − 0.01), more than three times a day (MD = − 2.13, p = .026, 95% CI: − 3.92 to − 0.25) less than once a week (MD = − 2.06, p = .03, 95% CI: − 4.00 to − 0.14). Likewise, in the Depression Subscale, the evaluated average score is significantly lower in subjects who search for information between two and five times a week (M = 13.32, SE = 1.14) compared to those who  repeat their search for information more than three times a day (MD = − 2.06, p = .030, 95% CI: − 3.90 to − 0.04) or do not search for news at all or less than once a week (MD = − 2.07, p = .034, 95% CI: − 3.92 to − 0.06). In the IES-R Scale, the evaluated average score for subjects who search for information two or three times a day (M = 38.03, SE = 2.08) is significantly higher than those reading news less than once a week (MD = 3.73, p = .032, 95% CI: 0.14 to 6.95) or between two and five times a week (MD = 2.74, p = .014, 95% CI: 0.52 to 4.97). No significant differences can be found in the PSS10 and PHQ-9 Scales. With regards to the amount of time spent on social networks, there are significant differences in the DASS-21 Stress and Anxiety Subscales. In particular, in the DASS-21 Stress subscale, the scores of those who spend between one and two hours a day on social networks (M = 15.04, SE = 1.22) are considerably lower than those who spend more than five hours a day (B = − 1.48, p = .026, 95% CI: − 2.68 to − 0.22).
With regards to the DASS-21 Anxiety subscale, however, the scores of the subjects who do not use technology for spending time on social networks are significantly higher (M = 15.49, SE = 2.91) compared to the subjects using social networks between three and seven hours a week (MD = 5.62, p = .046, 95% CI: − 0.10 to 11.42), for one or two hours a day (MD = 6.72, p = .,024 95% CI: 1.03 to 12.19), between two and five hours a day (MD = 7.14, p = .018, 95% CI: 1.79 to 12.63) and more than five hours a day (MD = 5.62, p = .044, 95% CI: 0.14 to 11.34). In addition, the scores of the subjects who use social networks more than five hours a day (M = 9.87, SE = 1.10) are significantly higher than those who use them between two and five hours a day (B = − 1.52, p = .002, 95% CI: − 2.61 to − 0.54). The PSS10 Stress Subscale results are partially reconfirmed with the evaluated average scores which are significantly higher in people who use social networks for more than five hours a day (M = 19.64, SE = 0.68) compared to those of all other groups, with the exception of those respondents never using social networks (Table 4). In the same manner, with regards to the PHQ-9 Scale, the average evaluated scores of those participants who use technology for more than five hours a day (M = 9.57, SE = 0.68) are considerably higher than those ones who use social networks for one or two hours a day (B = − 1.06, p = .004, 95% CI: − 1.80 to − 0.32) and those ones who use them between two and five hours a day (B = − 0.84, p = .018, 95% CI: − 1.54 to − 0.20). No significant differences can be found in the IES-R Scale.
Based on how technology and other means are employed to retrieve information about the pandemic, people who use the internet have significantly higher scores (M = 17.28, SE = 1.09) in the DASS-21 Stress subscale compared to those who listen to the news on television (MD = 1.49, p = .024, 95% CI: 0.22 to 2.71) or on the radio (MD = 6.63, p = .004, 95% CI: 2.02 to 11.73). Similarly, even in the DASS-21 Depression subscale, the scores of those who use internet are significantly higher (M = 16.08 SE = 0.97) than those who mainly rely on television (MD = 1.96, p = .002, 95% CI: 0.83 to 3.15) and radio (MD = 7.56, p = .002, 95% CI: 2.93 to 11.85) as source of information. The same tendency is also reflected in the DASS-21 Anxiety subscale amongst people who mainly use internet (M = 12.01, SE = 0.98) and those who, on the other hand, make greater use of television (MD = 1.42, p = .008, 95% CI: 0.37 to 2.43) and radio (MD = 5.14, p = .008, 95% CI: 1.09 to 9.20). These results are also confirmed in the PSS10 Scale where those respondents who use internet (M = 19.26 SE = 0.58) have significantly higher scores than those ones who mainly rely on television (MD = 1.21, p = .004, 95% CI: 0.37 to 1.98) and radio (MD = 2.75, p = .012, 95% CI: 0.58 to 5.00). The results deriving from the PHQ-9 scale prove that the participants using internet have an average evaluated score (M = 10.09 SE = 0.69) which is significantly higher than those ones using the radio (MD = 3.99, p = .006, 95% CI: 1.31 to 6.98). No significant differences can be found in the IES-R scale with regards to the means adopted as information source.

Table 4
association between the use of free-time and of means of information and communication and the psychological impact of the COVID-19 in the PSS10, PHQ-9 and IES-R Scales.  compared to those ones who use the radio (MD = 7.71, p = .006, 95% CI: 2.41 to 13.16). A similar result is achieved in the DASS-21 Depression Subscale with a significant difference in the average evaluated scores between those participants who obtain their information from family and friends (M = 16.71, SE =1.68) and those participants who rely on the radio (MD = 8.19, p = .002, 95% CI: 2.96 to 13.37) as information source. The DASS-21 results are reconfirmed by the stress and depression tests of the PSS10 and PHQ-9. In particular, the subjects who searched for information via family and friends are characterized by higher average PSS10 scores (M = 20.73, SE = 1.05) when compared to those who use television (MD = 2.68, p = .008, 95% CI: 0.64 to 4.54) and radio (MD = 4.22, p = .002, 95% CI: 1.57 to 6.92). In the PHQ-9 Depression scale, the survey participants who receive their information through family and friends (MD = 4.22, p = .002, 95% CI: 1.57 to 6.92) have a higher average evaluated score than those ones who use the radio (MD = 3.13, p = .042, 95% CI: − 0.10 to 6.32).

Awareness and coping strategies
By taking into consideration the covariances of this model, the coping and mindful awareness strategies largely explain the average score variations of the dependent variables ( Table 2, Table 4). More specifically, the lowest scores in the MAAS scale, relating to reduced awareness, are significantly linked to the highest scores in the DASS-21, PSS10, PHQ-9 and IES-R scales. At the same time, however, the highest scores in avoidance strategies (Brief-COPE Avoidant) relate to considerably higher scores in all of the previous scales. Finally, with regards to Approach Strategies (Brief-COPE Approach), the highest variable scores correspond to significantly lower scores in the DASS21, PSS10 and PHQ-9 Anxiety and Depression subscales.

Discussion
In line with literature dealing with the psychological impact of COVID-19 pandemic (Odriozola-González et al., 2020;Sim et al., 2010;Torales et al., 2020;Wang et al., 2020d) and with the more recent systematic review (Xiong et al., 2020), the results of this study show the presence of a strong stress and psychopathological factor during the lockdowns caused by the spread of SARS-CoV-2 disease.
In particular, when summarizing the answers of the online questionnaire, it is possible to notice that between 60% and 80% of the population sample shows stress levels that are above normal and at levels ranging from mild to severe; in particular, between 17% and 36% of the investigated sample shows levels that range from moderate to severe (Fig. 1, Fig. 2). Likewise, between 54% and 69% of the sample indicates levels of depression ranging from mild to severe, of whom between 40 and 44% at a moderate or severe level ( Fig. 1; Fig. 3). In the sample, 45% of the interviewed subjects also shows levels of anxiety above average with 39% of cases at a medium or severe level (Fig. 1). Finally, 70% of the sample suffers from the psychological impact and from the risk of PTSD that can be considered as being medium to severe in 55% of cases (Fig. 4).
The prevalence estimates of psychopathology, even with some differences in the range, are in good agreement with the findings derived from the systematic review performed by Xiong and colleagues (Xiong et al., 2020). In this review study, it was documented that prevalence of high stress levels ranged from 8.1% to 81.9%, of high depression levels were from 14.6% to 48.3%, of high anxiety levels were from 6.33% to 50.9% and high scores about PTSD from 7% to 53.8%. The prevalence rates of our results are located at the top of the mentioned ranges.
This same literature also explains how psychological effects during a pandemic can be mitigated by a number of personal, social and environmental factors. These factors include, for example, several types of fears: infection, inadequate psychological and social assistance, loss of income and receiving insufficient information to deal with the pandemic (Brooks et al., 2020;Hawryluck et al., 2004;Odriozola-González et al., 2020;Xiong et al., 2020).
The data collected show a good correlation between the score in the levels of awareness and coping strategies and the psychological impact. More specifically, the lowest scores on the MAAS Awareness scale are estimated to have higher stress levels and a higher risk of PTSD, depression and anxiety; this tendency is also reflected in the Coping Strategy scale. People who have a strategical approach to solve problems, generally being more adaptive, show lower scores in all of the scales taken into consideration, with the exception of the DASS-21 Stress Subscale and of the IES-R Scale. On the other hand, people who more widely adopt avoidance strategies are exposed to higher psychopathological risks on all scales. These results confirm the findings of previous studies (Main et al., 2011;Sim et al., 2010) which also focus on other precarious health conditions (Falgares et al., 2019). A certain correlation is therefore confirmed between negative affectivity, levels of awareness, coping strategies and a certain fragility and predisposition towards types of psychopathology (Meyer, 2001;Watson and Clark, 1984). More contradictory are the results reported in the systematic review by Xiong and colleagues (Xiong et al., 2020). In facts, if on the one hand they confirm the protectivity of a secure attachment and a coping approach, on the other hand they also consider an avoidant style as a protective one, differently from anxious style. According to the authors, this outcome could be explained by people with an avoidant style that might seem calm in a stressful situation or could experiment less distress with social distancing and self-isolation.
The differences between genders reflect the findings of other studies carried out on the COVID-19 pandemic Liu et al., 2020;Wang et al., 2020d), with the female population appearing to be generally more exposed to the effects of the pandemic with a more severe symptomatology than of the one of the male population. Furthermore, having children seems to be a risk factor only with regards to the IES-R scale which measures the chances of developing PTSD caused by the trauma.
Even a number of social factors are partially linked to an increased psychopathological risk, as already alluded to by other authors (Brooks et al., 2020;Cao et al., 2020;Wang et al., 2020d). In this particular case, this work documented a significant increase in depression in the DASS-21 scale amongst people with an elementary school education compared to the rest of the sample, while in the Anxiety subscale less anxiety was registered amongst those participants belonging to the higher income bracket compared to the other income brackets.
The categories at the highest risk in socio-demographic terms are, therefore, confirmed as being the female population and people with lower education and income (Cao et al., 2020). However, it was not possible to detect any significant differences between various forms of occupation.
Other determining factors in worsening the symptomatology and impact of COVID-19 on the population seem to be, on the one hand, knowing people who are infected and, on the other hand, the characteristics of the place people live in. With regards to the first aspect, people with acquaintances who are infected are at greater risk, especially in relation to the DASS-21 Stress and Anxiety subscale and to the IES-R scale with regards to the risk of PTSD. With regards to the second aspect, those respondents who stated not to have open-air spaces in their homes were in a more critical situation than those ones living in dwelling with balconies, terraces and private gardens in which they could distract themselves during the pandemic.
Curiously enough and contrary to what literature may have led us to expect (Cheval et al., 2020;López-Bueno et al., 2020;Stanton et al., 2020), going out for a walk and performing physical exercise are not useful factors for the prevention of stress, anxiety and depression and can even be worsening factors with regards to the risk of PTSD. This could be explained by the worries caused by leaving the house and by the restrictions imposed during periods of lockdown. At the same time, the study also documented how carrying out other activities, such as non-essential shopping, does not significantly create any greater or lesser psychopathological risk.
Considering that the respondents were located in different countries, no significant random effect on the independent variables of the country groupings was encountered. Moreover, a significant and constant effect was registered with country variables regarding levels of stress, symptoms of depression and of anxiety and with regards to the risk of PTSD. More specifically, countries such as Iran and Ecuador appear to be more closely associated with a greater psychological impact with regards to the risks relating to PTSD, while Norway is the country with the smallest risk. Considering the stress scales, respondents from Italy suffer most from the impact of the pandemic while respondents from China suffer the least with regards to stress levels. Even considering the scores regarding depression and anxiety, Italy is the worst affected country while, according to the DASS-21 Anxiety subscale, Ecuador is the worst hit country. The Chinese participants are the ones who have reacted better than anyone to the emergency with regards to levels of depression and anxiety.
An additional factor, that in literature has already emerged as being relevant in situations of crisis, is the one defined by the means of communication and of information: greater risks are associated with communication and the incessant exposure to potentially traumatic events in the media (Neria and Sullivan, 2011;Roy et al., 2020) and eventual fake news and disinformation (Shuja et al., 2020;Roy et al., 2020;Quinn et al., 2018).
The results obtained in this work partially confirm the findings of previous studies. As a matter of fact, according to our research, those individuals who use internet to search for information about the pandemic situation are associated to higher scores on the stress, depression and PTSD scales compared to those who obtain information via radio or television. These same trend in the results are found when comparing those individuals who obtain their information from friends and family to those ones who mainly use radio and television as their information source. Furthermore, there is a strong association between the amount of time spent to search for information and the relative score. In fact, those ones who only search for information from two to five times a week are less at risk with regards to psychopathological disorders compared to those ones who never do so or to those ones who, quite at the opposite, obstinately look for news about the pandemic several times a day.
Finally, those ones who moderately use social networks by spending an average of one or two hours per day will suffer less from the consequences of the lockdowns caused by COVID-19 compared to those ones excessively use or do not use social networks at all. These latter results, which are relative to an excessive exposure to news reporting and to the use of technology, shed light on two important implications. On the one hand, the results highlight the dangers of mass information which may be unchecked, biased and organised without adequate public awareness (Shuja et al., 2020;Roy et al., 2020;Quinn et al., 2018), such as through word of mouth from friends and acquaintances. On the other hand the results of this study underline that the use of social media can be considered as being a protective factor, with the aim of distracting oneself and nurturing his or her social network, but on the sole condition that this is done with moderation.
Even in this case, comparing these results with the systematic review of Xiong and colleagues (Xiong et al., 2020), it is noted that being female, belonging to lowest educational background, knowing and being concerned about infected people and being continuously exposed to COVID-19 news are psychopathological risk factors. In addition, while for the systematic review belonging to a poor economic status is predictive of psychopathology, in this study it was observed that people in highest economic status are less vulnerable. Differently, the systematic review also found that occupation is a predictive psychopathological factor; in particular, students and unemployed suffer more severe consequences of COVID-19 pandemic. This difference could be explained by the mediation of different factors such as age, income bracket and education.
When it comes to comparing the respondents located in different countries, both in this study and in the systematic review (Xiong et al., 2020), psychopathological symptoms could be explained by the degree of outbreak severity, government readiness, degree and timing of quarantine measures, national economic situation, disclosure of COVID-19 information and other possible sociocultural elements. Moreover, as a limitation of this study, this research did not investigate the use of some precautional measures that, according to the current literature, influence psychopathological levels such as hand hygiene and wearing face mask (Wang et al., 2020a(Wang et al., , 2020d; for example, Wang and colleagues (Wang et al., 2020a) demonstrated that there are different habits about using face masks between Chinese and Polish subjects. Specifically, the less frequent use of the face mask by Polish individuals is correlated with higher physical and psychopathological symptoms.

Conclusions
In this study data regarding the psychological impact on individuals were collected from more than 1600 subjects located in seven countries (Australia, China, Ecuador, Iran, Italy, Norway and the United States) affected by the recent COVID-19 pandemic. A number of differences found in the numerousness of the groups of variables, combined with differences of sociocultural nature and the temporal development of the pandemic, created a plausible source of difficulty in analysing and generalizing the data presented in this study. On the other hand, the model of analysis adopted enables to draw some significant conclusions regarding the psychological effects related to the global pandemic.
Ultimately, during the early months of the pandemic, a considerable portion of the global population appears to have suffered the psychological consequences arising from the enactment of lockdown measures, as depression, anxiety, stress and possible risks of PTSD were encountered in more than half of the sample individuals. Some factors appear to accentuate the onset of these psychopathological problems. More specifically, being a female, having a lower level of education and income, carrying out outdoor activities, being excessively exposed to news reporting or being acquainted with people who are infected seem to be important risk factors. In addition, being a very active user of social networks or being a person not employing technology at all are other risk factors, as well as, to some extent, having children. On the flip side, having the possibility to benefit from an open-air space at home, exposing oneself to news updates regarding the COVID-19 development in a responsible manner and keeping moderate communications with acquaintances in social networks are all elements that offer protection against the psychological impact of the pandemic. Furthermore, a greater mindful awareness and the use of coping strategies generally indicate a higher resistance to the adversities of the pandemic, while a larger use of avoidance strategies is linked to a higher risk of developing psychopathological symptoms.
These results, therefore, become fundamental in determining which of the factors can cause a worsening of psychological symptoms during a pandemic such as COVID-19. At the same time, these findings are invaluable when it comes to demonstrate the importance of intervention to be performed by service institutions and mass-media, which should aim at correctly informing the public in a proper, unbiased and prudent fashion. These results are no less important in highlighting the need to offer psychological support to the population and, above all, to the most vulnerable individuals. In conclusion, in the light of the impact that the pandemic event entails on the global population, it will be imperative and interesting to understand the long-term effects by examining the results of a possible follow-up study which may take place when the global emergency is over. Furthermore, it is also desirable to gather further in-depth analyses encompassing a larger number of countries affected by the pandemic, surveying a larger sample of subjects and evaluating the effect of precautional measures.