Fig. 1

Evolution of depression status throughout study period. Figure represents changes on Yesavage Geriatric Depression Scale (YGDS) along study period in nursing home residents (A) and in the same group attending to their baseline cognitive status (B). Lower panel (C and D) represents changes on Beck’s Depression Inventory-II Scale along study period in clinical staff (C) and relatives (D). Data represent mean ± sd. Statistical differences were evaluated by a repeated measures general linear model. Post hoc evaluation of differences among time periods were performed with Sidak’s test for multiple comparison (For YGDS: F = 16,900, gl = 98, partial η² = 0.256. For staff: F = 3.935, gl = 70, partial η² = 0.101; For relatives: F = 24.493, gl = 40, partial η² = 0.550)