TABLE 2.
Selected Patient Characteristics by Adherence Trajectory Group
| Adherence Trajectory Group | ||||||||
|---|---|---|---|---|---|---|---|---|
| Adherent | Discontinuation | Discontinuation | Discontinuation | Stop-Start | Immediate Discontinuation | Overall | ||
| 9 Months | 6 Months | 3 Months | 6 Months | |||||
| (n = 9,838) | (n = 1,497) | (n = 1,937) | (n = 4,448) | (n = 4,525) | (n = 7,361) | (N = 29,607) | ||
| Percentage of total sample | 33.2 | 5.1 | 6.5 | 15.0 | 15.3 | 24.9 | 100.0 | |
| Treatment history (6 months pre-index), % (SD) | ||||||||
| ED MHR admission 6 months pre-index | 15.4 (36.1) | 20.2 (40.1) | 20.0 (40.0) | 25.0 (43.3) | 22.9 (42.0) | 27.8 (44.8) | 21.7 (41.2) | |
| Inpatient psych admission 6 months pre-index | 13.1 (33.7) | 17.8 (38.3) | 16.6 (37.3) | 22.8 (42.0) | 16.7 (37.3) | 24.6 (43.1) | 18.4 (38.8) | |
| Share of OP visits with psychiatrist | 24.7 (41.8) | 26.2 (42.5) | 32.3 (45.1) | 20.1 (37.9) | 22.6 (40.0) | 16.8 (35.0) | 22.3 (39.8) | |
| Repeated provider interactions | 36.4 (48.1) | 41.8 (49.3) | 48.4 (50.0) | 38.1 (48.6) | 37.0 (48.3) | 36.3 (48.1) | 37.8 (48.5) | |
| Codiagnoses and other conditions (6 months pre-index), % (SD) | ||||||||
| Alcoholism | 15.3 (36.0) | 21.3 (41.0) | 19.6 (39.7) | 26.7 (44.2) | 23.4 (42.3) | 29.6 (45.7) | 22.4 (41.7) | |
| Drug abuse | 7.8 (26.9) | 12.9 (33.6) | 11.3 (31.6) | 15.5 (36.2) | 13.5 (34.2) | 18.5 (38.9) | 13.0 (33.7) | |
| Adherence (12 months post-index), % (SD) | ||||||||
| PDC 98.9 (3.2) 76.4 (11.1) | 69.7 (14.4) | 42.6 (13.1) | 74.3 (17.1) | 18.4 (12.2) | 63.4 (34.2) | |||
| PDC categorical | ||||||||
| 0%-25% | 0.0 (0.0) | 0.0 (0.0) | 0.0 (0.0) | 1.6 (12.5) | 0.0 (0.0) | 71.3 (45.2) | 18.8 (39.1) | |
| 26%-50% | 0.0 (1.0) | 1.0 (9.7) | 1.6 (12.5) | 66.7 (47.1) | 7.8 (26.8) | 25.5 (43.6) | 17.2 (37.7) | |
| 51%-75% | 0.0 (1.0) | 30.7 (46.1) | 62.0 (48.6) | 29.3 (45.5) | 35.3 (47.8) | 3.0 (17.1) | 15.8 (36.5) | |
| 76%-100% | 100.0 (1.4) | 68.4 (46.5) | 36.4 (48.1) | 2.4 (15.4) | 56.9 (49.5) | 0.2 (3.9) | 48.2 (50.0) | |
| Acute care use (12 months post-index), % (SD) | ||||||||
| ED visits, number | 1.7 (4.1) | 2.1 (4.5) | 2.0 (4.3) | 2.4 (4.8) | 2.5 (5.1) | 2.9 (6.8) | 2.3 (5.2) | |
| Inpatient admissions, number | 1.1 (5.6) | 0.6 (2.2) | 0.6 (2.1) | 0.5 (1.8) | 0.8 (3.4) | 0.4 (1.4) | 0.7 (3.7) | |
Note: The full distribution of the categorical variables is reported.
ED = emergency department; MHR = mental health-related; OP = outpatient; PDC = proportion of days covered; SD = standard deviation.