TABLE 1.
Baseline Demographics (January 2010-December 2010)
| Characteristic | Baseline Adherent | Baseline Nonadherent | ||||
|---|---|---|---|---|---|---|
| Status Change n = 31,320 | No Status Change n = 112,896 | P Value | Status Change n = 39,284 | No Status Change n = 54,902 | P Value | |
| Age, years, mean (SD) | 72.0 (8.6) | 72.3 (8.6) | < 0.001a | 71.4 (9.1) | 70.8 (9.7) | < 0.001a |
| Age category, n (%) | ||||||
| 19-29 | < 10 (0.0) | 20 (0.0) | < 0.001b | 15 (0.0) | 48 (0.1) | < 0.001b |
| 30-39 | 53 (0.2) | 211 (0.2) | 107 (0.3) | 302 (0.6) | ||
| 40-49 | 364 (1.2) | 1,269 (1.1) | 680 (1.7) | 1,206 (2.2) | ||
| 50-59 | 1,522 (4.9) | 5,138 (4.6) | 2,370 (6.0) | 3,839 (7.0) | ||
| 60-69 | 6,459 (20.6) | 22,194 (19.7) | 9,043 (23.0) | 11,846 (21.6) | ||
| 70-79 | 15,534 (49.6) | 56,664 (50.2) | 18,802 (47.9) | 26,098 (47.5) | ||
| 80-89 | 6,604 (21.1) | 24,434 (21.6) | 7,400 (18.8) | 10,363 (18.9) | ||
| ≥ 90 | 777 (2.5) | 2,966 (2.6) | 867 (2.2) | 1,200 (2.2) | ||
| Sex, n (%) | ||||||
| Male | 14,168 (45.2) | 51,976 (46.0) | < 0.012b | 18,261 (46.5) | 24,153 (44.0) | < 0.001b |
| Female | 17,152 (54.8) | 60,920 (54.0) | 21,023 (53.5) | 30,749 (56.0) | ||
| Race, n (%) | ||||||
| White | 25,497 (81.4) | 92,284 (81.7) | < 0.001b | 31,586 (80.4) | 40,840 (74.4) | < 0.001b |
| Black | 3,264 (10.4) | 11,719 (10.4) | 4,012 (10.2) | 7,751 (14.1) | ||
| Hispanic | 551 (1.8) | 2,225 (2.0) | 748 (1.9) | 1,204 (2.2) | ||
| Other | 944 (3.0) | 3,231 (2.9) | 1,222 (3.1) | 1,718 (3.1) | ||
| Unknown | 1,064 (3.4) | 3,437 (3.0) | 1,716 (4.4) | 3,389 (6.2) | ||
| Geographic region, n (%) | ||||||
| Northeast | 1,894 (6.1) | 6,598 (5.8) | < 0.001b | 2,089 (5.3) | 2,854 (5.2) | < 0.001b |
| Midwest | 8,509 (27.2) | 30,160 (26.7) | 10,380 (26.4) | 13,403 (24.4) | ||
| South | 17,218 (55.0) | 64,287 (57.0) | 22,302 (56.8) | 32,306 (58.8) | ||
| West | 3,698 (11.8) | 11,842 (10.5) | 4,511 (11.5) | 6,336 (11.5) | ||
| Unknown | < 10 (0.0) | < 10 (0.0) | < 10 (0.0) | < 10 (0.0) | ||
| Population density, n (%) | ||||||
| Urban | 18,247 (58.3) | 64,389 (57.0) | < 0.001b | 22,975 (58.5) | 33,023 (60.2) | < 0.001b |
| Suburban | 8,191 (26.2) | 29,393 (26.0) | 10,062 (25.6) | 13,838 (25.2) | ||
| Rural | 4,682 (15.0) | 18,521 (16.4) | 6,009 (15.3) | 7,692 (14.0) | ||
| Unknown | 200 (0.6) | 593 (0.5) | 238 (0.6) | 349 (0.6) | ||
| Plan characteristics, n (%) | ||||||
| LIS status only | 2,238 (7.2) | 10,011 (8.9) | < 0.001b | 2,893 (7.4) | 4,128 (7.5) | 0.373b |
| Dual eligibility only | 86 (0.3) | 348 (0.3) | 0.336b | 116 (0.3) | 154 (0.3) | 0.676b |
| LIS status and dual eligibility | 2,666 (8.5) | 12,579 (11.1) | < 0.001b | 3,529 (9.0) | 5,027 (9.7) | 0.362b |
a Wilcoxon rank sum test was used for the continuous variables for all the tables.
b Chi-square test was used for the categorical variables for all the tables.
LIS = low-income subsidy; SD = standard deviation.