Demographics of study patient population
| Characteristic | Entire clinic | Pre-WPHC cohort | Post-WPHC cohort | WPHC patients |
| Sample size | 6236 | 1097 | 702 | 204 |
| Mean age, years (SD) | 42.6 (12.3) | 40.9 (12.0) | 42.6 (12.5) | 48.4 (10.1) |
| Median no of visits per year | 2.9 | 2.6 | 3.0 | 3.8 |
| Race (%) | ||||
| White | 51.0 | 49.4 | 49.1 | 48.0 |
| Black | 34.5 | 36.5 | 35.4 | 32.8 |
| Hispanic | 9.4 | 8.3 | 8.8 | 13.2 |
| Other | 5.1 | 5.8 | 6.7 | 6.0 |
| Insurance type (%) | ||||
| Medicare | 5.6 | 4.6 | 4.9 | 7.8 |
| Medicaid | 23.5 | 22.3 | 19.6 | 28.4 |
| Commercial/managed care | 19.3 | 23.4 | 20.6 | 11.3 |
| Self-pay | 51.6 | 49.7 | 54.9 | 52.5 |
Only women aged 18–63 years were included in the above data.
WPHC, Women's Preventive Health Clinic.