Descriptive characteristics of the participants in the Women’s Health and Aging Studies by frailty status
| Overall(N = 727) | Frail(N = 74) | Intermediately frail(N = 345) | Robust(N = 303) | |
| Mean (SE) education (years) | 11.64 (0.20) | 9.5 (0.39) | 11.21 (0.38) | 12.58 (0.20) |
| Mean (SE) income (US$) | 21699 (743) | 16554 (2600) | 20506 (1061) | 24114 (1134) |
| Mean (SE) age (years) | 74.2 (0.12) | 74.7 (0.34) | 74.1 (0.14) | 74.8(0.16) |
| % African-American | 24 | 12.1 | 49 | 38.9 |
| Insurance (%) | ||||
| Fully insured | 78 | 61 | 70 | 88 |
| Public providers | 13 | 24.7 | 16.9 | 6.4 |
| Uninsured beyond hospital admissions | 10 | 14.6 | 12.8 | 6.0 |
| Mean (SE) number of co-morbidities | 1.20 (0.05) | 1.6 (0.11) | 1.3 (0.06) | 0.88 (0.05) |
| Smoking status (%) | ||||
| Never | 51 | 51 | 46 | 59 |
| Former | 37 | 44 | 41 | 32 |
| Current | 12 | 13 | 13 | 19 |