Standardization of Elderly Life Satisfaction Index (LSIA)

Aim: The aim of this study was to standardize the 20-item life satisfaction index of the elderly without cognitive problems. Method: The present study was cross-sectional and descriptive and was in the category of developmental research. The population of this study is the elderly of Tehran, the method of judgmental sampling and the sample after removing the incomplete cases of 199 people, including 116 women and 83 men. After translating and obtaining the opinions of experts and subjects, the face validity and content of the questionnaire were confirmed. SPSS-22 and AMOS-23 software were used for statistical analysis. Results: The reliability of the questionnaire was calculated by internal consistency method and Cronbach's- alpha coefficient for the whole test was 0.840 and for all subscales was between 0.295 and 0.678. The construct validity of the questionnaire was assessed by first and second- order confirmatory factor analysis. The results show that five factors, including zest for life, Resolution and fortitude, consistency between aspirations and goals achieved, positive self-image and how to mood are approved with 99% confidence and 18 questions of the questionnaire with 99% confidence are included in the test scales. The results of convergent validity were also favorable and the correlation between the elderly life satisfaction questionnaire and the public life satisfaction scale was r = 0.726 (P <0.001). Conclusion: The analysis of the findings shows that the 18-item questionnaire on life satisfaction of the elderly is acceptable in terms of psychometric properties.