Title of article :
Medications Non-adherence Reasoning Scale (MedNARS): Development and psychometric properties appraisal
Author/Authors :
Allahverdipour ، Hamid Health Education Promotion Department - Research Center of Psychiatry and Behavioral Sciences - Tabriz University of Medical Sciences , Badri ، Majid Health Education Promotion Department - Tabriz University of Medical Sciences , Shaghaghi ، Abdulreza Health Education Promotion Department - Tabriz University of Medical Sciences , Mahmoodi ، Hassan Social Determinants of Health Research Center, Research Institute for Health Development - Kurdistan University of Medical Sciences , Heizomi ، Haleh Health Education Promotion Department - Tabriz University of Medical Sciences , Shirzadi ، Shayesteh Department of Public Health - Neyshabur University of Medical Sciences , Asghari-Jafarabadi ، Mohammad Cabrini Health
Abstract :
Background: Proper elucidation of medication non-adherence reasoning especially in older adults might pave the way for an auspicious therapeutic outcome. The main of this study was to develop and psychometrically test the Medications Non-adherence Reasoning (MedNARS) questionnaire for application in research and probably practice settings. Methods: A mixed methods design was utilized to develop the MedNARS. The item pool was mainly generated based on a qualitative query and literature review. The expert panel approved version of the MedNARS was psychometrically assessed on a convenience sample of 220 older patients with chronic disease. The internal consistency, test-retest reliability, content and face validity of the scale were appraised and its construct validity was assed using exploratory and confirmatory factor analyses. Results: A nine-item version of the MedNARS was drafted based on the classical item analysis procedures and its estimated internal consistency measure of the Cronbach’s alpha (0.85) and test-retest reliability (0.96) were in the vicinity of acceptable range. The exploratory factor analysis (EFA) output revealed a unidimensional structure for the MedNARS and the conducted confirmatory factor analysis (CFA) indicated an acceptable data fit for the extracted one-factor model. The goodness of fit indices were as the followings: χ2 /df=1.63(90% CI: 0.02 to 0.11), root mean squared error of approximation (RMSEA)=(0.07), comparative fit index (CFI)=0.95, Tucker–Lewis index (TLI)=0.93 and standardized root mean squared residual (SRMSR)=(0.05). Conclusion: The study findings were indicative of MedNARS’s applicability and feasibility for use in assessment of medication non-adherence reasoning among the elderly patients with chronic diseases. The MedNARS as a brief and elder-friendly instrument can be applied both in research and practice settings to enhance efficiency, safety, and health outcomes of the therapeutic recommendations.
Keywords :
Medication nonadherence , Aged , Surveys and questionnaires , Psychometrics , MedNARS
Journal title :
Health Promotion Perspectives (HPP)
Journal title :
Health Promotion Perspectives (HPP)
