[Reliability and validity of SF-36 scale for evaluating the quality of life of Tuva adults in the Xinjiang Uygur Autonomous Region].

Abstract

To assess the reliability and validity of SF-36 scale in measuring quality of life of Tuva adults in Xinjiang Uygur Autonomous Region. A total of 437 Tuva adults were selected by multistage sampling method, in Tuva families lived in Baihaba Village Habahe county and Kanasi and Hemu Villages Buerjin County in Artay Xinjiang Uygur Autonomous Region in 2016, including 100 males and 50 females, the three age groups 18-29, 30-49, 50 and above accounted for 30. 66%, 54. 00% and 15. 33% respectively. SF-36 scale was be used to measure the quality of life. The scale's reliability was assessed by internal consistency reliability and half-fold reliability, and the validity was assessed by set validity, discriminate validity and structural validity. The Cronbach's α coefficient of the SF-36 scale was 0. 838, and all of the Cronbach's α coefficients were more than 0. 750 after corresponding dimensions were deleted. The Spearman-Brown coefficient was 0. 828. The achievement ratio of aggregation tests and discrimination tests were 100% and 99. 59%, respectively. Thirty-five items were included in EFA. Seven common factors were extracted through maximum balanced rotation method, and the cumulative contribution rate was 68. 97%. Eight-dimensional data were included in EFA, and two common factors were extracted with a cumulative contribution rate of 66. 44%. The fitting degree of confirmatory factor analysis model is invalid. SF-36 has showed a good reliability, set validity and discrimination validity in evaluating the quality of life of Tuva adults in Xinjiang, but its structural validity needs to be improved.