Table 1.
Demographic and clinical characteristics of baseline study participants
| All participants | Caucasian | AA | P value | |
|---|---|---|---|---|
| Baseline demographic characteristics | n = 1422 | n = 1054 | n = 368 | |
| Age, mean (SD), years | 61.4 (9.0) | 61.4 (8.8) | 61.5 (9.4) | 0.6967 |
| BMI, mean (SD), kg/m2 | 28.9 (5.4) | 28.3 (4.9) | 30.6 (6.2) | <0.0001 |
| <25 % | 23.1 | 26.3 | 14.0 | <0.0001 |
| 25 – <30 % | 41.3 | 41.6 | 40.7 | |
| 30+ % | 35.5 | 32.2 | 45.3 | |
| Gender, % women | 60.0 | 56.8 | 69.0 | <0.0001 |
| Educational attainment < HS, % | 33.0 | 28.3 | 46.3 | <0.0001 |
| Smoking | ||||
| Never % | 51.2 | 49.4 | 56.3 | <0.0001 |
| Past % | 32.0 | 35.2 | 22.8 | |
| Current % | 16.8 | 15.4 | 20.9 | |
| Hip injury, % | 2.4 | 2.3 | 2.6 | 0.5723 |
| CES-D <16, % | 8.0 | 7.4 | 9.9 | 0.0315 |
| HAQ, mean (SD), score | 0.3 (0.5) | 0.3 (0.5) | 0.3 (0.5) | 0.1992 |
| Follow-up time, mean (SD), years | 6.0 (1.4) | 5.8 (1.3) | 6.5 (1.4) | <0.0001 |
AA African American, BMI body mass index, HS high school, CES-D Center for Epidemiologic Studies depression scale, HAQ health assessment questionnaire