Table 3.

Multivariate Linear Regression Model for Decline in Walking Speed in the Women’s Health and Aging Study I (N = 545)

Characteristic	Beta	S.E.	P
Loge serum protein carbonyls (nmol/mg)	−0.064	0.02	0.002
Age (years)
≤69	---	---	---
70–74.9	−0.134	0.031	<0.0001
75–79.9	−0.121	0.031	0.0001
80–84.9	−0.276	0.036	<0.0001
85–89.9	−0.377	0.032	<0.0001
≥90	−0.464	0.042	<0.0001
Study Visit
Second	0.005	0.011	0.64
Third	−0.028	0.011	0.013
Fourth	−0.051	0.012	<0.0001
Fifth	−0.058	0.013	<0.0001
Sixth	−0.070	0.014	<0.0001
Seventh	−0.107	0.015	<0.0001
Current smoking	−0.044	0.032	0.16
Body mass index1
<18.5	−0.009	0.064	0.89
18.5–24.9	---	---	---
25.0–29.9	0.011	0.026	0.67
≥30	−0.087	0.026	0.001
MMSE <24	−0.138	0.028	<0.0001
Congestive heart failure	−0.079	0.032	0.015
Peripheral artery disease	−0.017	0.025	0.50
Diabetes mellitus	−0.142	0.028	<0.0001
Depression	−0.089	0.027	0.001

¹For body mass index, 18.5–24.9 kg/m² was used as the reference category.