Table 2.

Characteristics of Older Women in the Women’s Health and Aging Study I According to Severe Mobility Difficulty Status at Baseline

	Severe Mobility Difficulty
Characteristic	No (n = 535, 53.4%)	Yes (n = 467, 46.6%)	P-Value
Age, mean	75.8	81.2	<.001
White, %	76.6	66.0	<.001
Mini-Mental State Examination score, mean	27.0	25.6	<.001
Education, years, mean	10.3	9.4	<.001
Lifelong nonsmoker, %	49.2	57.8	<.001
Body mass index, kg/cm2, mean	28.3	28.6	.54
Number of domains disabled in, %*
2	53.3	18.6	<.001
3	29.2	23.8	.05
4	17.6	57.6	<.001

^*Disability is reported difficulty in one or more tasks within a domain. The four domains assessed were: mobility, upper extremity, higher functioning, and self-care.