Table 2.

Interaction effects on the association of cognitive decline, stratified as continuous categories, with mortality after adjustments for corresponding covariates.

Subgroup	No. of patients	HR (95% CI)	HR (95% CI) for interaction	P for interaction
Total	14,891	1.04 (1.04, 1.05)
Age			0.99 (0.99, 1.00)	0.277
Aged 80–89	7220	1.05 (1.04, 1.06)
Aged 90+	7671	1.04 (1.03, 1.05)
Sex			1.01 (1.00, 1.01)	0.013
Male	6058	1.04 (1.03, 1.04)
Female	8833	1.05 (1.04, 1.05)
High BP			1.00 (0.99, 1.02)	0.082
Yes	8589	1.05 (1.04, 1.06)
No	6259	1.04 (1.03, 1.05)
Hypertension			1.01 (1.00, 1.01)	0.004
Yes	2224	1.06 (1.05, 1.08)
No	12,667	1.04 (1.03, 1.05)
Aged 80–89			1.01 (0.99, 1.02)	0.173
Non-high BP	4049	1.04 (1.03, 1.05)
High BP	3171	1.06 (1.04, 1.07)
Aged 90+			1.00 (1.00, 1.01)	0.002
Non-high BP	4547	1.04 (1.03, 1.05)
High BP	3124	1.04 (1.03, 1.05)