Volume 28, Issue 5 (12-2025)
J Arak Uni Med Sci 2025, 28(5): 0-0 |
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Rahimzadeh M, Ghavidel N, Kavehie B. Psychometrics of healthy lifestyle questionnaire in elderly people with Item-Response Theory. J Arak Uni Med Sci 2025; 28 (5)
URL: http://jams.arakmu.ac.ir/article-1-7865-en.html
URL: http://jams.arakmu.ac.ir/article-1-7865-en.html
1- Social Determinants of Health Research Center, Biostatistics and Epidemiology Department. Public Health School, Alborz University of Medical Sciences, Karaj, Iran
2- PhD of Neuroscience, Social Determinants of Health Research Center, Alborz University of Medical Sciences, Karaj, Iran
3- Assistant Professor the National Organization for Assessment and Evaluation of Education System, Tehran, Iran ,KavehieBehrooz@Yahoo.com
2- PhD of Neuroscience, Social Determinants of Health Research Center, Alborz University of Medical Sciences, Karaj, Iran
3- Assistant Professor the National Organization for Assessment and Evaluation of Education System, Tehran, Iran ,
Abstract: (31 Views)
Background an Aims: The age structure of the society has changed.with decreasing in mortality. With increasing the number of elderly people, paying attention to their physical, mental and social needs is one of the essential issues in society. It is necessary to have a reliable and valid tools for assessing the health status of this group of people for arranging future policies and planning health-treatment interventions. This study intends to investigate the psychometrics of the Lali Questionnaire for healthy lifestyle with item-response theory in the elderly of Karaj city.
Methods: Data collection have been done through distribution of questionnaires and interviews with patients in the health centers of Karaj city. In addition to demographic information, a healthy lifestyle questionnaire (Lali 2012) was used to collect information. The obtained information was analyzed with spss 26and Stata17 software.
Results: The mean (standard deviation) age of the participants in the study was 66.82 (6.59) years. Based on the fit criteria of the Akaike information, the nominal response model (NRM) had a better fit to the data among the common models in item-response theory for questionnaires with Likert scales. Based on this model, among the 54 items used, 6 items did not meet the acceptable criteria for discriminate parameter and were omitted from the questionnaire. Based on the total information function of the questionnaire, it has the ability to differentiate people in the trait range (-1.5, 2.5)
Ethical Considerations: All the questionnaires were collected anonymously and with informed written consent from the participants.
Conclusion: Using the item-response theory in psychometric of questionnaires helps to reduce the number of unrelated items and increase the accuracy of the measurement tools.
Methods: Data collection have been done through distribution of questionnaires and interviews with patients in the health centers of Karaj city. In addition to demographic information, a healthy lifestyle questionnaire (Lali 2012) was used to collect information. The obtained information was analyzed with spss 26and Stata17 software.
Results: The mean (standard deviation) age of the participants in the study was 66.82 (6.59) years. Based on the fit criteria of the Akaike information, the nominal response model (NRM) had a better fit to the data among the common models in item-response theory for questionnaires with Likert scales. Based on this model, among the 54 items used, 6 items did not meet the acceptable criteria for discriminate parameter and were omitted from the questionnaire. Based on the total information function of the questionnaire, it has the ability to differentiate people in the trait range (-1.5, 2.5)
Ethical Considerations: All the questionnaires were collected anonymously and with informed written consent from the participants.
Conclusion: Using the item-response theory in psychometric of questionnaires helps to reduce the number of unrelated items and increase the accuracy of the measurement tools.
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