A population-based dataset concerning predictors of willingness to get a COVID-19 vaccine in Iran

The global issue of preventing the spread of COVID-19 is challenging. One of the most efficient ways to control the pandemic is to have a full coverage of COVID-19 vaccination. Therefore, this paper collected survey data to understand the intention and willingness of COVID-19 vaccination uptake in Qazvin, Iran. With the use of a paper-and-pencil method and multistage stratified cluster sampling, research personnel approached and interviewed a representative sample of adults in Qazvin (n = 10843) between February 19 and April 9, 2021. The survey asked questions regarding sociodemographic information, fear of COVID-19, perceived COVID-19 infectability, perceived behavioral control over COVID-19 vaccination, subjective norm of COVID-19 vaccination, attitude towards COVID-19 vaccination, and intention to get COVID-19 vaccinated. The data collected from this survey were analyzed using descriptive statistics, which were carried out using the IBM SPSS version 17.0.


a b s t r a c t
The global issue of preventing the spread of COVID-19 is challenging. One of the most efficient ways to control the pandemic is to have a full coverage of COVID-19 vaccination. Therefore, this paper collected survey data to understand the intention and willingness of COVID-19 vaccination uptake in Qazvin, Iran. With the use of a paper-and-pencil method and multistage stratified cluster sampling, research personnel approached and interviewed a representative sample of adults in Qazvin ( n = 10843) between February 19 and April 9, 2021. The survey asked questions regarding sociodemographic information, fear of COVID-19, perceived COVID-19 infectability, perceived behavioral control over COVID-19 vaccination, subjective norm of COVID-19 vaccination, attitude towards COVID-19 vaccination, and intention to get COVID-19 vaccinated. The data collected from this survey were analyzed using descriptive statistics, which were carried out using the IBM SPSS version 17.0.
© 2021 The Author(s

Value of the Data
• This dataset is useful because it comprises data from a largescale study that includes a representative sample in Qazvin Iran to assess factors related to willingness of COVID-19 vaccination uptake, including fear of COVID-19, perceived COVID-19 infectability, attitude toward COVID-19 vaccination, subjective norm of COVID-19 vaccination, and perceived behavioral control over COVID-19 vaccination. Moreover, intention toward getting COVID-19 vaccinated was assessed in this dataset. • The dataset can benefit the following personnel: researchers in communicable disease, health behavior, health promotion, health psychology, public health, and epidemiology because the findings provide information and knowledge regarding general population's attitudes, subjective norm, perceived behavioral control, and intention toward COVID-19 vaccination. Moreover, the information of perceived COVID-19 infectability was collected in this dataset. Therefore, different health disciplines can use the data for health promotion and education to advocate and elevate general population's willingness to get COVID-19 vaccinated. • The dataset is useful for academic researchers who would like to understand the underlying psychological mechanisms of intention to uptake COVID-19 vaccination. More specifically, the present study's results can be compared with relevant studies from other countries to examine whether the psychological mechanisms can be applied to different countries. Moreover, systematic review and meta-analysis studies can be conducted in the future. • The findings from the present dataset may assist the authorities, including government and health policymakers, in decision making by using scientific evidence to develop and implement COVID-19 vaccination uptake guidelines.

Data Description
With the use of a representative sample, the present dataset provides insightful and useful information regarding COVID-19 vaccination uptake. The information was collected via paperand-pencil survey data in a general population of Qazvin, Iran. The present dataset included survey data from 10843 adults to understand their intention to get COVID-19 vaccinated. Moreover, potential factors that can explain intention to get COVID-19 vaccinated were collected. These factors were derived from two important health behavior theories: Theory of Planned Behavior [1] and Protection Motivation Theory [2] . More specifically, the factors derived from the Theory of Planned Behavior include attitude toward COVID-19 vaccination (i.e., how an individual evaluates the value of COVID-19 vaccination), subjective norm of COVID-19 vaccination (i.e., how an individual perceives others' opinions toward COVID-19 vaccination), and perceived behavioral control over COVID-19 vaccination (i.e., how an individual has confidence in getting COVID-19 vaccinated) [ 3 , 4 ]. The factors derived from the Protection Motivation Theory include fear of COVID-19 and perceived infectability (i.e., how an individual perceives the possibility of getting COVID-19 infection) [ 5 , 6 ]. The English version of the survey questionnaire is attached as a supplementary file. With understanding the intention of COVID-19 vaccination uptake (i.e., how an individual is willing to get COVID-19 vaccinated), herd immunity may be achieved [7] ; subsequently, psychological distress induced by the COVID-19 may be somewhat lessened [8][9][10][11] . Table 1 illustrates the participants' sociodemographic characteristics. Tables 2 and 3 shows the  distributions of responses related to the factors in the Theory of Planned Behavior. More specifically, Table 2 presents participants' attitude toward COVID-19 vaccination; Table 3 presents participants' subjective norm of COVID-19 vaccination, perceived behavioral control over COVID-19 vaccination, and intention to get COVID-19 vaccinated. Tables 4 and 5 demonstrates the distributions of responses related to the factors in the Protection Motivation Theory. More specifically, Table 4 presents participants' fear of COVID-19 and Table 5 presents participants' perceived COVID-19 infectability.

Experimental Design, Materials and Methods
The study was carried out using a cross-sectional design with multistage stratified cluster sampling among Qazvin adult residents, which comprised a representative sample of the general population in Qazvin, Iran [12] . Qazvin, a province located in the central part of Iran, is 50 km northwest of Tehran. The 2018 census, which is the latest census, shows that the province has a population of 1,273,761, where 51% were male. The first step of the multistage stratified cluster sampling was to decide six cities as clusters and Qazvin, Takestan, Avaj, Alborz, Buin Zahra, and Abyek were subsequently considered as the present study's clusters. In the second step, each city was stratified according to its urban and rural areas. In the third step, several health centers in each urban and rural areas were randomly selected. In the fourth step, the centers provided a list of families that were covered by their service and the families were randomly selected for participation. In the final step, several interviewers (who received standard training) visited the homes of the selected participants and interviewed the families for this survey. The survey period was between February 19 and April 9, 2021. The eligibility of the participants depended on fulfilling the following inclusion criteria. First, they had to be an adult resident in Qazvin province who was aged 18 years or above; and second, the participant had to be willing to participate after fully understanding the study's purpose and interview procedure. Moreover, the only exclusion criterion was that participants could not be could either guests or tourists in Iran during the survey period. In order to verify the participants' willingness to participate, each participant provided a written Informed consent. All the data were analyzed using descriptive statics (i.e., mean with SD; frequency with percentage) and internal consistency (i.e., Cronbach's α) carried out by the IBM SPSS 17.0.
Fear of COVID-19 was assessed using the 7-item Fear of COVID-19 Scale (FCV-19S), where all the items were rated on a 5-point Likert scale [13] ; the FCV-19S had satisfactory psychometric

Ethics Statement
In collecting the data, the 1975 Helsinki declaration and ethical permission to collect the data was granted from the Ethics Committee of Qazvin University of Medical Sciences (protocol code: IR.QUMS.REC.1399.418; date of approval: 20 January 2021). Additionally, written informed consent was provided by all participants prior to starting the survey. They were informed about the purpose and nature of the data and they had the right to withdraw their data if they wanted to.

Declaration of Competing Interest
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Supplementary Materials
Supplementary material associated with this article can be found in the online version at doi: 10.1016/j.dib.2021.107459 .