TABLE 3.
Selected Membership Model Odds Ratios Relative to Adherent Group
| Adherence Trajectory Group | |||||
|---|---|---|---|---|---|
| Discontinuation | Discontinuation | Discontinuation | Stop-Start | Immediate Discontinuation | |
| 9 Months | 6 Months | 3 Months | 6 Months | ||
| (n = 1,497) | (n = 1,937) | (n = 4,448) | (n = 4,525) | (n = 7,361) | |
| Insurance type | |||||
| Medicare | 0.710 | 0.770 | 0.710a | 0.720b | 0.730a |
| (0.139) | (0.128) | (0.078) | (0.079) | (0.064) | |
| Medicaid | 0.860 | 0.820 | 0.570b | 0.740b | 0.500b |
| (0.082) | (0.072) | (0.033) | (0.044) | (0.023) | |
| Commercial (reference) | |||||
| Treatment history (6 months pre-index) | |||||
| ED MHR admission 6 months pre-index | 1.210 | 1.220 | 1.280b | 1.280b | 1.490b |
| (0.103) | (0.096) | (0.069) | (0.068) | (0.064) | |
| Inpatient psych admission 6 months pre-index | 1.130 | 1.080 | 1.100 | 0.840a | 1.150a |
| (0.110) | (0.098) | (0.067) | (0.053) | (0.057) | |
| Share of OP visits with psychiatrist | 0.970 | 1.160 | 0.650b | 0.840a | 0.490b |
| (0.084) | (0.088) | (0.039) | (0.047) | (0.024) | |
| Repeat provider interactions | 1.300b | 1.570b | 1.340b | 1.100 | 1.350b |
| (0.098) | (0.108) | (0.066) | (0.052) | (0.053) | |
| Comorbid conditions (6 months pre-index) | |||||
| Major depressive disorder | 1.130 | 1.130 | 1.230b | 1.240b | 1.060 |
| (0.078) | (0.071) | (0.055) | (0.054) | (0.038) | |
| Bipolar disorder | 0.960 | 1.070 | 1.000 | 1.080 | 0.850b |
| (0.065) | (0.067) | (0.045) | (0.046) | (0.031) | |
| Charlson Comorbidity Index | 0.980 | 1.040 | 1.040a | 1.040a | 1.060b |
| (0.027) | (0.023) | (0.016) | (0.016) | (0.014) | |
| Alcoholism | 1.230 | 1.120 | 1.510b | 1.340b | 1.680b |
| (0.110) | (0.094) | (0.085) | (0.075) | (0.076) | |
| Drug abuse | 1.460b | 1.250 | 1.450b | 1.460b | 1.810b |
| (0.1550) | (0.131) | (0.101) | (0.101) | (0.101) | |
Note: All values are rendered as odds ratio (standard error). The odds ratio is the effect of that patient characteristic on the relative probability of membership in the trajectory group compared with the adherent group and is calculated as the exponentiated logistic regression coefficient. Age category, sex, and a constant term were also included in the model. Bayesian information criterion statistic = -147,699.
a P < 0.01.
b P < 0.001.
ED = emergency department; MHR = mental health-related; OP = outpatient.