老年抑郁量表在中国农村社区老年人中的信度和效度

Reliability and Validity of the Chinese Version of Geriatric Depression Scale:A Study in A Population of Chinese Rural Community-dwelling Elderly

目的:考察老年抑郁量表(GDS)中文版在中国农村社区老年人中的信度和效度。方法:采用GDS、社会支持评定量表(SSRS)和日常生活能力量表(ADL)对412名农村社区老年人(60岁及以上)进行测试。结果:项目分析显示高、低分组被试在所有条目上的得分差异都达到显著性水平,符合心理测量学要求。量表的内部一致性Cronbach'sα系数为0.9197,20天后重测相关系数为0.729。量表有较好的区分效度:GDS总分与SSRS总分之间呈负相关,Pear-son相关系数等于-0.459(P<0.01);日常生活能力有障碍组GDS总分高于日常生活能力正常组(P<0.01)。探索性因素分析揭示了单维的量表结构。结论:老年抑郁量表具有较好的信度和效度,可作为我国农村社区老年人抑郁症状研究的有效工具。

Objective： To explore the reliability and validity of Geriatric Depression Scale （GDS） when used in Chinese rural community-dwelling elderly. Methods： GDS, Social Support Rating Scale（SSRS） and Activities of Daily Living（ADL） were administrated to 412 community residents aged 60 years or more. 13 of the 412 were re-tested after 20 days by telephone. Results ： The result of item analysis showed that all the 30 items of GDS had met psychometric criteria. The Cronbach＇s α coefficient was 0.9197, and test-retest in 20 days 0.729. GDS had acceptable discriminant validity： GDS scores negatively correlated with SSRS scores （Pearson α=-0.459, P〈0.01）; and could effectively differentiate those with impaired daily living activities from the normal. Exploratory factor analysis indicated the scale was unidimensional. Conclusion： The Chinese version of GDS shows good reliability and validity and can be used in research of depression symptoms in the social cultural context of Chinese rural community.