Abstract
The aim of this work was to evaluate the psychometric properties of the Dutch version of the Swallowing Quality-of-Life Questionnaire (DSWAL-QOL). A cross-sectional survey of 295 dysphagic patients and 124 healthy controls was studied to evaluate the validity and reliability of the DSWAL-QOL, and 50 patients were recruited for the test–retest reliability. Construct validity was validated through principal component analysis and a correlation study between the DSWAL-QOL and the SF-36. The psychometric properties of the DSWAL-QOL were found to be largely similar to those of the original SWAL-QOL, except the Sleep scale; the composite Symptoms score reaffirms its validity in this study. The DSWAL-QOL was able to differentiate between dysphagic and nondysphagic patients and is sensitive to disease severity as measured by known-groups validity, based on different food and liquid textures. The DSWAL-QOL is a clinically valid and reliable tool for assessing the quality of life in Dutch-speaking dysphagic patients, regardless of the cause or severity of the dysphagia.
Similar content being viewed by others
References
Brunier GM, Graydon J. The influence of physical activity on fatigue in patients with ESRD on hemodialysis. ANNA J. 1993;20(4):457–61. discussion 62, 521.
Delate T, Coons SJ. The discriminative ability of the 12-item short form health survey (SF-12) in a sample of persons infected with HIV. Clin Ther. 2000;22(9):1112–20.
Marks GB, Dunn SM, Woolcock AJ. An evaluation of an asthma quality of life questionnaire as a measure of change in adults with asthma. J Clin Epidemiol. 1993;46(10):1103–11.
Wang B, Gladman DD, Urowitz MB. Fatigue in lupus is not correlated with disease activity. J Rheumatol. 1998;25(5):892–5.
Ward MM. Clinical measures in rheumatoid arthritis: which are most useful in assessing patients? J Rheumatol. 1994;21(1):17–27.
Batalden PB, Nelson EC, Roberts JS. Linking outcomes measurement to continual improvement: the serial “V” way of thinking about improving clinical care. Jt Comm J Qual Improv. 1994;20(4):167–80.
Guyatt GH, Berman LB, Townsend M, Pugsley SO, Chambers LW. A measure of quality of life for clinical trials in chronic lung disease. Thorax. 1987;42(10):773–8.
Guyatt G, Mitchell A, Irvine EJ, Singer J, Williams N, Goodacre R, et al. A new measure of health status for clinical trials in inflammatory bowel disease. Gastroenterology. 1989;96(3):804–10.
The DCCT Research Group. Reliability and validity of a diabetes quality-of-life measure for the diabetes control and complications trial (DCCT). The DCCT Research Group. Diabetes Care. 1988;11(9):725–32.
Drossman DA, Li Z, Leserman J, Patrick DL. Ulcerative colitis and Crohn’s disease health status scales for research and clinical practice. J Clin Gastroenterol. 1992;15(2):104–12.
Laupacis A, Muirhead N, Keown P, Wong C. A disease-specific questionnaire for assessing quality of life in patients on hemodialysis. Nephron. 1992;60(3):302–6.
Laupacis A, Pus N, Muirhead N, Wong C, Ferguson B, Keown P. Disease-specific questionnaire for patients with a renal transplant. Nephron. 1993;64(2):226–31.
Guillemin F, Bombardier C, Beaton D. Cross-cultural adaptation of health-related quality of life measures: literature review and proposed guidelines. J Clin Epidemiol. 1993;46(12):1417–32.
U.S. Department of Health and Human Services FDA Center for Drug Evaluation and Research; U.S. Department of Health and Human Services FDA Center for Biologics Evaluation and Research; U.S. Department of Health and Human Services FDA Center for Devices and Radiological Health. Guidance for industry: patient-reported outcome measures: use in medical product development to support labeling claims: draft guidance. Health Qual Life Outcomes. 2006;4:79.
McHorney CA, Bricker DE, Kramer AE, Rosenbek JC, Robbins J, Chignell KA, et al. The SWAL-QOL outcomes tool for oropharyngeal dysphagia in adults: I. Conceptual foundation and item development. Dysphagia. 2000;15(3):115–21.
McHorney CA, Bricker DE, Robbins J, Kramer AE, Rosenbek JC, Chignell KA. The SWAL-QOL outcomes tool for oropharyngeal dysphagia in adults: II. Item reduction and preliminary scaling. Dysphagia. 2000;15(3):122–33.
McHorney CA. Generic health measurement: past accomplishments and a measurement paradigm for the 21st century. Ann Intern Med. 1997;127(8 Pt 2):743–50.
Nunnally JC, Bernstein IH. Psychometric theory. 3rd ed. New York: McGraw-Hill; 1994.
Manning WG, Newhouse JP, Ware JE. Rand Corporation. The status of health in demand estimation: beyond excellent, good, fair, and poor. Santa Monica: Rand; 1980.
McHorney CA, Robbins J, Lomax K, Rosenbek JC, Chignell K, Kramer AE, et al. The SWAL-QOL and SWAL-CARE outcomes tool for oropharyngeal dysphagia in adults: III. Documentation of reliability and validity. Dysphagia. 2002;17(2):97–114.
Terwee CB, Bot SD, de Boer MR, van der Windt DA, Knol DL, Dekker J, et al. Quality criteria were proposed for measurement properties of health status questionnaires. J Clin Epidemiol. 2007;60(1):34–42.
Wainer H, Braun HI. Educational testing service. Test validity. Hillsdale: Lawrence Erlbaum Associates; 1988.
Bogaardt HC, Speyer R, Baijens LW, Fokkens WJ. Cross-cultural adaptation and validation of the Dutch version of SWAL-QoL. Dysphagia. 2009;24(1):66–70.
Hunt SM, Alonso J, Bucquet D, Niero M, Wiklund I, McKenna S. Cross-cultural adaptation of health measures. European group for health management and quality of life assessment. Health Policy. 1991;19(1):33–44.
Razavi D, Gandek B. Testing Dutch and French translations of the SF-36 Health Survey among Belgian angina patients. J Clin Epidemiol. 1998;51(11):975–81.
Streiner DL, Norman GR. Health measurement scales: a practical guide to their development and use. 3rd ed. New York: Oxford University Press; 2003.
Guyatt GH, Feeny DH, Patrick DL. Measuring health-related quality of life. Ann Intern Med. 1993;118(8):622–9.
Wilson IB, Cleary PD. Linking clinical variables with health-related quality of life. A conceptual model of patient outcomes. JAMA. 1995;273(1):59–65.
DeVellis RF. Scale development: theory and applications. 2nd ed. Thousand Oaks: Sage Publications; 2003.
McDowell I, Newell C. Measuring health: a guide to rating scales and questionnaires. 2nd ed. New York: Oxford University Press; 1996.
Child D. The essentials of factor analysis. 3rd ed. New York: Continuum; 2006.
Dunteman GH. Principal Components Analysis (Quantitative applications in the social sciences). Newbury Park: Sage Publications; 1989.
McHorney CA, Tarlov AR. Individual-patient monitoring in clinical practice: are available health status surveys adequate? Qual Life Res. 1995;4(4):293–307.
Everitt B, Palmer CR. Encyclopaedic companion to medical statistics. 2nd ed. Chichester: Wiley; 2011.
Bland JM, Altman DG. Cronbach’s alpha. BMJ. 1997;314(7080):572.
McGraw KO, Wong SP. Forming inferences about some intraclass correlations coefficients. Psychol Methods. 1996;1(1):30–46.
Hattie J, Cooksey RW. Procedures for assessing the validities of tests using the “known-groups” method. Appl Psychol Meas. 1984;8.
Field AP. Discovering statistics using SPSS (and sex, drugs and rock ‘n’ roll), 3rd ed. Los Angeles: Sage Publications; 2009.
Ekberg O, Hamdy S, Woisard V, Wuttge-Hannig A, Ortega P. Social and psychological burden of dysphagia: its impact on diagnosis and treatment. Dysphagia. 2002;17(2):139–46.
Martino R, Beaton D, Diamant NE. Perceptions of psychological issues related to dysphagia differ in acute and chronic patients. Dysphagia. 2010;25(1):26–34.
Finizia C, Rudberg I, Bergqvist H, Ryden A. A cross-sectional validation study of the Swedish version of SWAL-QOL. Dysphagia. 2012. doi:10.1007/s00455-011-9369-6.
Chevalier H, Los F, Boichut D, Bianchi M, Nutt DJ, Hajak G, et al. Evaluation of severe insomnia in the general population: results of a European multinational survey. J Psychopharmacol. 1999;13(4 Suppl 1):S21–4.
Somers A, Robays H, Audenaert K, Van Maele G, Bogaert M, Petrovic M. The use of hypnosedative drugs in a university hospital: has anything changed in 10 years? Eur J Clin Pharmacol. 2011;67(7):723–9.
Warie H, Petrovic M, Somers A, Mariman A, Robays H, Pevernagie D. The use of hypnosedative drugs in a university hospital setting. Acta Clin Belg. 2003;58(4):225–32.
Lam PM, Lai CK. The validation of the Chinese version of the swallow quality-of-life questionnaire (SWAL-QOL) using exploratory and confirmatory factor analysis. Dysphagia. 2011;26(2):117–24.
Conflict of interest
The authors have no conflicts of interest to disclose.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Vanderwegen, J., Van Nuffelen, G. & De Bodt, M. The Validation and Psychometric Properties of the Dutch Version of the Swallowing Quality-of-Life Questionnaire (DSWAL-QOL). Dysphagia 28, 11–23 (2013). https://doi.org/10.1007/s00455-012-9408-y
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00455-012-9408-y