TABLE 5.
Patient Characteristics of Prevalent Atrial Fibrillation Patients Who Were Nonswitchers, Comparing Adherent Patients to Nonadherent Patients
| Follow-up Period | Adherent (MPR ≥ 0.80) | Nonadherent (MPR < 0.80) | |||||
|---|---|---|---|---|---|---|---|
| 6 Months | 9 Months | 12 Months | 6 Months | 9 Months | 12 Months | ||
| Number of patients | 1,593 | 847 | 349 | 1,120 | 741 | 338 | |
| Age, mean (SE) | 64.7 (11.1) | 65.3 (11.0) | 65.2 (11.5) | 60.5 (11.8) | 60.4 (11.9) | 60.4 (11.8) | |
| Age, n (%) | |||||||
| 18-44 | 41 (2.6) | 18 (2.1) | 8 (2.3) | 69 (6.2) | 45 (6.1) | 24 (7.1) | |
| 45-64 | 876 (55.0) | 455 (53.7) | 191 (54.7) | 744 (66.4) | 500 (67.5) | 225 (66.6) | |
| 65-74 | 357 (22.4) | 193 (22.8) | 76 (21.8) | 166 (14.8) | 104 (14.0) | 49 (14.5) | |
| 75+ | 319 (20.0) | 181 (21.4) | 74 (21.2) | 141 (12.6) | 92 (12.4) | 40 (11.8) | |
| Gender, n (%) | |||||||
| Male | 1,085 (68.1) | 585 (69.1) | 248 (71.1) | 802 (71.6) | 544 (73.4) | 252 (74.6) | |
| Female | 508 (31.9) | 262 (30.9) | 101 (28.9) | 318 (28.4) | 197 (26.6) | 86 (25.4) | |
| Region of residence, n (%) | |||||||
| East | 147 (9.2) | 77 (9.1) | 39 (11.2) | 130 (11.6) | 75 (10.1) | 42 (12.4) | |
| Midwest | 485 (30.4) | 278 (32.8) | 122 (35.0) | 356 (31.8) | 241 (32.5) | 128 (37.9) | |
| South | 780 (49.0) | 394 (46.5) | 143 (41.0) | 526 (47.0) | 351 (47.4) | 129 (38.2) | |
| West | 181 (11.4) | 98 (11.6) | 45 (12.9) | 108 (9.6) | 74 (10.0) | 39 (11.5) | |
| CHADS2, mean (SE) | 1.62 (1.11) | 1.63 (1.11) | 1.63 (1.09) | 1.27 (1.11) | 1.25 (1.06) | 1.25 (1.08) | |
| CHADS2, n (%) | |||||||
| 0 | 230 (14.4) | 124 (14.6) | 50 (14.3) | 291 (26.0) | 186 (25.1) | 84 (24.9) | |
| 1 | 576 (36.2) | 294 (34.7) | 118 (33.8) | 444 (39.6) | 304 (41.0) | 145 (42.9) | |
| 2 | 478 (30.0) | 260 (30.7) | 115 (33.0) | 248 (22.1) | 168 (22.7) | 70 (20.7) | |
| 3 | 215 (13.5) | 120 (14.2) | 49 (14.0) | 84 (7.5) | 54 (7.3) | 25 (7.4) | |
| 4 | 71 (4.5) | 38 (4.5) | 12 (3.4) | 39 (3.5) | 24 (3.2) | 10 (3.0) | |
| 5 | 22 (1.4) | 11 (1.3) | 5 (1.4) | 12 (1.1) | 4 (0.5) | 3 (0.9) | |
| 6 | 1 (0.1) | 0 (0.0) | 0 (0.0) | 2 (0.2) | 1 (0.1) | 1 (0.3) | |
Source: IMS Health LifeLink Health Plan Claims Database, 2010-2012.23
MPR = medication possession ratio; SE = standard error.