Exhibit 3. Sample Characteristics of VA and Medicare outpatient users, 1999 and 2004: Percent (Std.Dev.).
| Full 5% Sample | VA-Only Users | |||
|---|---|---|---|---|
| 1999 | 2004 | 1999 | 2004 | |
|
|
|
|||
| Total N | 73,721 | 125,042 | 13,736 | 17,922 |
| (100) | (100) | (18.6) | (14.3) | |
| VA Only Use | 18.6 | 14.3† | 100.0 | 100.0 |
| (38.9) | (35.0) | |||
| VA & Medicare Use | 46.1 | 56.1† | -- | -- |
| (49.8) | (49.2) | |||
| Medicare Only Use | 35.2 | 29.6† | -- | -- |
| (47.8) | (45.6) | |||
| Age as of (12/31/2003) | ||||
| 66–74 | 53.6 | 45.8† | 64.0 | 59.7† |
| (49.9) | (49.8) | (48.0) | (49.0) | |
| 75–84 | 42.6 | 47.0† | 33.4 | 35.9† |
| (49.4) | (49.9) | (47.2) | (48.0) | |
| 85+ | 3.8 | 7.3† | 2.6 | 4.4† |
| (19.2) | (25.9) | (16.0) | (20.6) | |
| Race | ||||
| Non-Black | 91.6 | 93.2† | 82.5 | 84.3† |
| (27.7) | (25.1) | (38.0) | (36.3) | |
| Black | 8.4 | 6.8† | 17.5 | 15.7† |
| (27.7) | (25.1) | (38.0) | (36.3) | |
| Gender | ||||
| Female | 2.0 | 2.0 | 2.1 | 1.9 |
| (13.9) | (14.1) | (14.3) | (13.6) | |
| Male | 98.0 | 98.0 | 97.9 | 98.1 |
| (13.9) | (14.1) | (14.3) | (13.6) | |
| VA priority level | ||||
| Low | 21.0 | 40.7† | 8.4 | 17.7† |
| (40.8) | (49.1) | (27.7) | (38.1) | |
| High | 79.0 | 59.3† | 91.6 | 82.3† |
| (40.8) | (49.1) | (27.7) | (38.1) | |
| HCC risk score | ||||
| Low | 25.0 | 25.1 | 32.6 | 38.4† |
| (43.3) | (43.3) | (46.9) | (48.6) | |
| Medium-Low | 25.0 | 25.0 | 29.0 | 29.4 |
| (43.3) | (43.3) | (45.4) | (45.6) | |
| Medium-High | 25.0 | 25.0 | 23.1 | 20.9† |
| (43.3) | (43.3) | (42.1) | (40.6) | |
| High | 25.0 | 25.0 | 15.4 | 11.4† |
| (43.3) | (43.3) | (36.1) | (31.7) | |
| Type of ZIP Code | ||||
| Rural | 20.9 | 20.1† | 20.7 | 20.8 |
| (40.6) | (40.1) | (40.5) | (40.6) | |
| Urban | 79.1 | 79.9† | 79.3 | 79.2 |
| (40.6) | (40.1) | (40.5) | (40.6) | |
| Poverty level of ZIP Code | ||||
| Low | 85.9 | 88.6† | 78.8 | 82.2† |
| (34.8) | (31.8) | (40.9) | (38.3) | |
| High | 14.1 | 11.4† | 21.2 | 17.8† |
| (34.8) | (31.8) | (40.9) | (38.3) | |
| Medicaid enrollment | 7.6 | 7.9† | 4.8 | 7.0† |
| (26.5) | (27.0) | (21.4) | (25.6) | |
| Distance to VA | ||||
| < 5 miles | 12.8 | 10.1† | 21.9 | 17.7† |
| (33.4) | (30.1) | (41.4) | (38.1) | |
| 5–9.9 miles | 11.9 | 10.8† | 15.1 | 15.1 |
| (32.4) | (31.1) | (35.8) | (35.9) | |
| 10–19.9 miles | 14.6 | 15.5† | 15.4 | 16.3† |
| (35.3) | (36.2) | (36.1) | (36.9) | |
| 20–39.9 miles | 19.7 | 20.7† | 17.0 | 19.2† |
| (39.8) | (40.5) | (37.6) | (39.4) | |
| 40+ miles | 40.9 | 42.8† | 30.5 | 31.7† |
| (49.2) | (49.5) | (46.0) | (46.5) | |
†
Differences in means between the years are statistically significant at p <0.05
SOURCE:VA and Medicare FFS enrollment and outpatient utilization databases in 1999 and 2004.