Key result
Family support questionnaire for low-fat diets shows acceptable internal consistency and explains ~83% of variance.
Why the study?
Social support is a key factor in adherence to a low fat diet among patients with cardiovascular disease, but a validated questionnaire to measure family support was lacking.
Cross-Sectional (n=212)
Yes
The newly developed family support questionnaire is a valid and reliable tool for assessing support for low-fat diet adherence in cardiovascular patients.
Supports questionnaire use in adherence research; leaves open clinical integration without prospective validation.
Background and Objectives: Social support is considered as a key factor in adherence to a low fat diet among patients with cardiovascular disease. The main objective of this study is to develop and evaluate the psychometric properties of the family support questionnaire for adherence to low fat diet in patients with cardiovascular disease. Methods: The participants were 212 patients with cardiovascular disease who were discharged from 2 medical centers (Khatam Al-Anbiya and Ali Ibn Abi Talib) in the city of Zahedan. They were enrolled by the convenience sampling method. Internal consistency and Cronbach’s alpha were used to test the scale’s reliability and following, the exploratory factor analysis method (principal components analysis by using Varimax rotation) was used for the investigation factor structure. Results: The principal components analysis (PCA) provided support for two-factor structure (emotional and instrumental support) of the family support questionnaire for adherence to low fat diet in patients with cardiovascular disease. Two-factor structure explained 83.29% of the variance. In this analysis, the first factor (emotional support) and second factor (instrumental support), respectively, explained 63.03% and 20.25% of variance. The questionnaire had acceptable internal consistency. The Cronbach’s alpha coefficient for the questionnaire was 0.89 and for both instrumental and emotional support was equal to 0.71 and 0.99, respectively. Conclusions: The present questionnaire is a valid and reliable instrument to measure family support for adherence to low fat diet in patients with cardiovascular disease.
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Okati‐Aliabad et al. (2018) conducted a cross-sectional in cardiovascular disease (n=212). Family support questionnaire for adherence to low fat diet was evaluated on Factor structure and internal consistency. The family support questionnaire for adherence to a low-fat diet demonstrated a two-factor structure explaining 83.29% of variance and acceptable internal consistency (Cronbach's alpha 0.89).
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