Table 1.

Characteristics of older women with and without symptomatic knee or hip OA^*

	With OA (n = 40)	Without OA (n = 20)	P
Age, years	63.1 ± 7.3	64.3 ± 7.8	0.57
Bachelors or advanced degree, no. (%)	25 (63)	12 (60)	0.85
Married, no. (%)	21 (53)	12 (60)	0.58
White, no. (%)	35 (88)	19 (95)	0.65†
Works ≥20 hours/week, no. (%)	18 (45)	7 (35)	0.46
Body mass index, kg/m2	31.0 ± 5.6	24.7 ± 3.8	0.0001
Geriatric Depression Scale score	2.1 ± 2.5	0.5 ± 0.7	0.001
Number of prescription medications at baseline	2.8 ± 2.4	1.6 ± 1.6	0.04
Daily pain medication use, no. (%)‡	23 (58)	1 (5)	0.0001
Number of painful or stiff joints	3.9 ± 1.7	1.7 ± 1.7	0.0001
Self-reported disability, EPESE score	3.2 ± 1.4	1.0 ± 1.2	0.0001
Timed Up and Go Test, seconds	9.8 ± 2.3	8.0 ± 1.2	0.0004
Right knee extension torque, Nm	91.1 ± 36.8	95.8 ± 30.5	0.68

^*Values are the mean ± SD unless otherwise indicated. OA = osteoarthritis; EPESE = Established Population for Epidemiologic Studies in the Elderly Battery; Nm = Newton meters.

^†By Fisher’s exact test due to low cell counts.

^‡Number of people who used pain medication on any day over the 5-day home data collection period.