Shi Zhidao, Chang Jingzhi, Ma Xiquan, Yin Feiyan, Ma Min, Li Wentian, Zhu Binggen, Ai ZiSheng, Zhao Xudong
Shanghai Pudong New Area Mental Health Center, Tongji University School of Medicine, Shanghai, People's Republic of China.
Department of Preventive Medicine, School of Public Health, Jiamusi University, Jiamusi, Heilongjiang Province, People's Republic of China.
Diabetes Metab Syndr Obes. 2021 Feb 22;14:801-811. doi: 10.2147/DMSO.S286153. eCollection 2021.
Translate General Adherence Scale (GAS) into Chinese and test its psychometric properties in middle-aged and elderly type 2 diabetes (T2D) patients using insulin in the Han people of urban China.
We translated the GAS into Chinese and established General Adherence Scale in Chinese (GAS-C). 136 T2D subjects were selected for testing GAS-C's reliability and validity, of which 100 study subjects were retested with GAS-C two weeks later. The other 200 T2D subjects were selected for performing Confirmatory Factor Analysis(CFA). The ceiling effect and floor effect of GAS-C data were checked.
No data was lost in our research. In exploratory factor analysis(EFA), the Kaiser-Meyer-Olkin measure of sampling adequacy (KMO) =0.899, Bartlett's Test's χ=611.821 (df=10 p<0.001). The communalities of the items were between 0.740 and 0.862; The values of Measure of Sampling Adequacy (MSA) were between 0.883 and 0.945. All five items entered the factor analysis process. A common factor was extracted, and it could explain 81.403% of the total variance. CFA validated the.one-factor model was good fits with the data of GAS-C (Ratio of Chi-square to Degrees of Freedom (CMIN/DF)=2.032, Goodness of Fit Index (GFI) =0.981, Comparative Fit Index (CFI) =0.996, Tucker-Lewis Index (TLI) =0.992, Root Mean Square Residual (RMR) =0.011, Root Mean Square Error of Approximation (RMSEA) =0.072). Correlation analysis was performed between GAS-C and MMAS-8 to calculate the criterion-related validity (r=0.542 p<0.001). The internal consistency reliability α=0.942, Intraclass Correlation Coefficient (ICC)= 0.941 (95% CI 0.924-0.955). The correlation coefficient r of the test-retest reliability was 0.772 (p<0.001). Spearman-Brown coefficient of split-half was 0.939. There was no floor effect and ceiling effect on the data.
GAS-C has good reliability and validity. It can be used for general adherence studies of middle-aged and elderly type 2 diabetic patients using insulin in the Han people of Chinese cities.
将一般依从性量表（GAS）翻译成中文，并在中国城市汉族中老年2型糖尿病（T2D）胰岛素治疗患者中测试其心理测量学特性。
我们将GAS翻译成中文，建立了中文版一般依从性量表（GAS-C）。选取136例T2D患者测试GAS-C的信效度，其中100例研究对象在两周后再次使用GAS-C进行测试。另外选取200例T2D患者进行验证性因子分析（CFA）。检查GAS-C数据的天花板效应和地板效应。
本研究无数据丢失。在探索性因子分析（EFA）中，Kaiser-Meyer-Olkin抽样适当性度量（KMO）=0.899，Bartlett检验的χ=611.821（自由度df=10，p<0.001）。各项目的共同度在0.740至0.862之间；抽样适当性度量（MSA）值在0.883至0.945之间。所有五个项目均进入因子分析过程。提取了一个共同因子，它可以解释总方差的81.403%。CFA验证了单因素模型与GAS-C数据拟合良好（卡方与自由度之比（CMIN/DF）=2.032，拟合优度指数（GFI）=0.981，比较拟合指数（CFI）=0.996，Tucker-Lewis指数（TLI）=0.992，均方根残差（RMR）=0.011，近似均方根误差（RMSEA）=0.072）。对GAS-C与MMAS-8进行相关性分析以计算效标关联效度（r=0.542，p<0.001）。内部一致性信度α=0.942，组内相关系数（ICC）=0.941（95%CI 0.924 - 0.955）。重测信度的相关系数r为0.772（p<0.001）。Spearman-Brown分半系数为0.939。数据不存在地板效应和天花板效应。
GAS-C具有良好信效度。可用于中国城市汉族中老年2型糖尿病胰岛素治疗患者的一般依从性研究。
