Table 3.

Impact of cognitive function at baseline on depressive symptoms from age 85 to 89 years in 334 people living in the community without depressive symptoms at baseline (GDS-15 score ≤2 points). Impact is additional annual increase of depressive symptoms score per SD of cognitive function test score at baseline (2.65 for global cognitive function, 31.59 for attention, 7.08 for processing, 5.72 for immediate recall, and 2.74 for delayed recall)

Cognitive function test	Additional annual increase of GDS-15 score (SE)	P value
Global cognitive function	−0.06 (0.04)	0.17
Attention	0.08 (0.04)	0.05
Processing speed	−0.03 (0.04)	0.42
Immediate recall	−0.17 (0.04)	0.01
Delayed recall	−0.10 (0.04)	0.02

Associations were assessed by separate linear mixed models adjusted for sex and educational level. GDS-15 score increased highly significantly over time in all models (P<0.001). GDS-15=15 item geriatric depression scale.