Table 1.
Demographic characteristics of patients seen at seven Duke Medicine clinics during 2008
| All Patients (n = 58,942) |
HVP Enrolleesa (n = 12,077) |
Nonusersa (n = 46,865) |
Pb | ||
| n (%) | n (%) | n (%) | |||
| Female | 34,094 (57.8) | 7702 (63.8) | 26,392 (56.3) | < .001 | |
| Age group | |||||
| ≥ 65 | 8569 (14.5) | 1750 (14.5) | 6819 (14.6) | .88 | |
| 55-64 | 7441 (12.6) | 2536 (21.0) | 4905 (10.5) | < .001 | |
| 40-54 | 11,619 (19.7) | 3818 (31.6) | 7801 (16.6) | < .001 | |
| 30-39 | 6601 (11.2) | 2211 (18.3) | 4390 (9.4) | < .001 | |
| 18-29 | 5804 (9.8) | 1199 (9.9) | 4605 (9.8) | .75 | |
| ≤ 17 | 18,908 (32.1) | 563 (4.7) | 18,345 (39.1) | < .001 | |
| Ethnicity | |||||
| Hispanic/Latino | 2263 (3.8) | 147 (1.2) | 2116 (4.5) | < .001 | |
| Other | 56,679 (96.2) | 11,930 (98.8) | 44,749 (95.5) | < .001 | |
| Race | |||||
| White | 29,621 (50.2) | 8495 (70.3) | 21,126 (45.1) | < .001 | |
| Black | 22,182 (37.6) | 2415 (20.0) | 19,767 (42.2) | < .001 | |
| Asian | 2135 (3.6) | 557 (4.6) | 1578 (3.4) | < .001 | |
| Other | 5004 (8.5) | 610 (5.1) | 4394 (9.4) | < .001 | |
| Payor classc | |||||
| Medicaid | 9888 (16.8) | 199 (1.6) | 9689 (20.7) | < .001 | |
| Medicare | 8301 (14.1) | 1539 (12.7) | 6762 (14.4) | < .001 | |
| Private | 39,243 (66.6) | 10,080 (83.5) | 29,163 (62.2) | < .001 | |
| Uninsured/self-pay | 848 (1.4) | 63 (0.5) | 785 (1.7) | < .001 | |
| Unknown | 662 (1.1) | 196 (1.6) | 466 (1.0) | < .001 | |
a Enrollee status as of 12/31/2008
b P value by 2-tailed χ2 test
cPayor as of last 2008 appointment