Psychometric Properties of the Iranian Version of Resources and Support for Chronic Illness Self‑management Scale in Patients with Type 2 Diabetes

Abstract

Background: This article is a report of psychometric testing ofthe Farsi version of Resources and Support for Chronic IllnessSelf‑management (RSSM) scale.Methods: In this cross‑sectional study, a convenience sampleof 160 patients with type 2 diabetes, registered with the CharityFoundation for Special Diseases’ team‑focused diabetes clinic,were recruited (response rate=83.7%; n=134). Participantsolder than 18 years who had active medical files in the systemcompleted the questionnaire. Content validity was establishedusing translation and back‑translation procedures, pilot testing ofthe instrument, and getting views of the expert panel. Constructvalidity was determined using explanatory factor analysis. Internalconsistency was ascertained using Cronbach’s alpha. The stabilitywas confirmed using intra‑class correlation coefficients.Results: Using exploratory factor analysis, a five‑factor modelemerged, which explained 75.24% of the total variance. Internalconsistency reliability was sufficient (α=0.70; range=0.66 – 0.87).The intra‑class correlation coefficient was 0.74 – 0.81 for individualitems.Conclusion: The RSSM‑Farsi seems to be a valid and reliableinstrument to measure outcomes of diabetes self‑managementeducation programs in Farsi. The RSSM‑Farsi version scale couldbe a useful, comprehensive, and culturally sensitive scale forassessing resources and support for self‑management betweentype 2 diabetic patients.Keywords: Exploratory factor analysis, reliability, type 2 diabetesmellitus, validity