Table 2.

Unadjusted and adjusted association of short physical performance battery (SPPB) with time to driving cessation.

	Unadjusted hazard ratio (95% confidence interval)1	Adjusted hazard ratio (95% confidence interval)2
SPPB status
Poor	Ref	Ref
Fair	0.29 (0.19–0.46)	0.31 (0.18–0.52)
Good	0.08 (0.05–0.14)	0.09 (0.04–0.20)

Male individuals	Unadjusted hazard ratio (95% confidence interval)3	Adjusted hazard ratio (95% confidence interval)4
SPPB status
Poor	Ref	Ref
Fair	0.33 (0.14–0.80)	0.45 (0.25–0.81)
Good	0.08 (0.05–0.13)	0.19 (0.10–0.36)

Female individuals	Unadjusted hazard ratio (95% confidence interval)5	Adjusted hazard ratio (95% confidence interval)4
SPPB status
Poor	Ref	Ref
Fair	0.28 (0.15–0.52)	0.26 (0.10–0.65)
Good	0.12 (0.04–0.35)	4.0 × 10−8 (1.5 × 10−8 – 1.1 × 10−7)

¹Total N = 2,976. ²Adjusted for age, sex, marital status, education, delayed and immediate word recall, vision, and adjusting for clustering within each site. ³Total N = 1,358. ⁴Adjusted for age, marital status, education, delayed and immediate word recall, vision, and adjusting for clustering within each site. ⁵Total N = 1578.