Table 1.
Characteristics of the Health, Aging, and Body Composition Study Population
| White men (N = 857) | Black men (N = 513) | White women (N = 791) | Black women (N = 672) | |
|---|---|---|---|---|
| Number of hip fractures | 17 | 3 | 29 | 14 |
| Pittsburgh Clinic (%) | 50.3 | 51.1 | 46.2 | 53.6 |
| Age (years) | 73.9 (2.9) | 73.4 (2.7) | 73.6 (2.8) | 73.4 (2.9) |
| Height (cm) | 173.2 (6.3) | 172.8 (6.8) | 159.5 (5.9) | 159.5 (6.4) |
| Total % fat | 29.9 (4.7) | 28.0 (5.2) | 40.1 (5.4) | 40.1 (5.9) |
| BMI (kg/m2) | 27.0 (3.7) | 27.1 (4.2) | 26.0 (4.4) | 29.5 (5.6) |
| Thigh muscle CSA (cm2) | 127.2 (19.3) | 138.6 (24.6) | 85.2 (13.6) | 101.3 (16.7) |
| Thigh muscle attenuation (HU) | 37.5 (6.3) | 37.0 (6.4) | 34.8 (6.3) | 32.6 (6.9) |
| Knee extensor strength (Nm) | 131.2 (33.2) | 135.8 (37.0) | 78.6 (19.9) | 86.0 (23.1) |
| SPPB score | 10.6 (1.3) | 9.9 (1.7) | 10.0 (1.5) | 9.5 (1.7) |
| Total hip BMD (g/cm2) | 0.943 (0.143) | 1.017 (0.157) | 0.765 (0.126) | 0.856 (0.150) |
| Chronic disease index | 2.4 (1.5) | 2.5 (1.5) | 2.3 (1.4) | 2.4 (1.4) |
| Physical activity (kcal/week) | 84.8 (66.0) | 83.0 (78.7) | 84.3 (60.0) | 81.3 (75.2) |
| Cognitive status | 92.4 (6.1) | 84.7 (10.1) | 93.6 (5.4) | 87.4 (8.8) |
| Smoking (pack-years) | 27.8 (33.6) | 23.1 (26.0) | 12.7 (24.3) | 11.9 (21.6) |
| Alcohol consumption (% more than 1 drink per week) | 45.1 | 26.1 | 30.0 | 9.7 |
| Education (% with low education) | 14.5 | 48.6 | 10.5 | 39.2 |
| Self-rated health (% excellent/very good) | 53.7 | 34.7 | 50.9 | 34.3 |