Brown Patrick J, Woods Carol M, Storandt Martha
Department of Psychology, Washington University, St. Louis, MO 63130, USA.
Psychol Aging. 2007 Jun;22(2):372-9. doi: 10.1037/0882-7974.22.2.372.
The 15-item Geriatric Depression Scale (GDS) is used in a wide variety of clinical and research settings. The study's purpose was to further establish the validity of the 15-item GDS by exploring the underlying factor structure in a healthy, nondemented sample of older adults and then analyzing whether this factor structure remained stable across a sample of demented individuals and a sample of individuals with a history of depression 6 months after discharge from an inpatient psychiatric setting. A 2-factor model fit the data best in the exploratory analyses. The 2 factors, Life Satisfaction and General Depressive Affect, found in the nondemented sample (r = .39) remained stable across cognitive impairment (r = .12) but merged into a 1-factor model in the psychiatric sample (r = .93). The results indicate that nondepressed older adults with poor life satisfaction may be identified as depressed on screening instruments such as the 15-item GDS.
15项老年抑郁量表（GDS）被广泛应用于各种临床和研究场景。该研究的目的是，通过在健康、无痴呆的老年样本中探索潜在因素结构，进而分析该因素结构在痴呆个体样本以及从住院精神科出院6个月后有抑郁病史的个体样本中是否保持稳定，以进一步确定15项GDS的有效性。在探索性分析中，一个双因素模型最能拟合数据。在无痴呆样本中发现的两个因素，即生活满意度和一般抑郁情绪（r = 0.39），在认知障碍样本中保持稳定（r = 0.12），但在精神科样本中合并为一个单因素模型（r = 0.93）。结果表明，生活满意度低的非抑郁老年人在使用15项GDS等筛查工具进行筛查时可能会被判定为抑郁。
