Table III.
Logistic regression for adherence (whether MPR ≥80%)
| Variables | Odds ratio | 95% CI | Average marginal effect (dy/dx) | 95% CI for marginal effects |
|---|---|---|---|---|
| Age | 1.01 | (1.00, 1.02) | 0.002 | (0.000, 0.004) |
| Male | 0.92 | (0.79, 1.09) | −0.017 | (−0.052, 0.018) |
| Northeast (ref: west) | 0.89 | (0.64, 1.25) | −0.024 | (−0.097, 0.048) |
| Midwest (ref: west) | 0.88 | (0.64, 1.19) | −0.029 | (−0.096, 0.038) |
| South (ref: west) | 0.70 | (0.52, 0.95) | −0.076 | (−0.141, −0.011) |
| Whether commercial (ref: Medicare Advantage) | 1.19 | (0.99, 1.42) | 0.037 | (−0.002, 0.076) |
| Baseline comorbid score | 1.04 | (0.99, 1.10) | 0.008 | (−0.003, 0.020) |
| Tier 2 | 0.62 | (0.46, 0.83) | −0.103 | (−0.166, −0.040) |
| Daily pill burden | 0.59 | (0.43, 0.81) | −0.113 | (−0.180, −0.046) |
| Baseline office visit count | 0.99 | (0.98, 1.00) | −0.002 | (−0.005, 0.000) |
| Baseline outpatient visit count | 1.00 | (0.98, 1.02) | 0.000 | (−0.005, 0.004) |
| Baseline ER visit count | 0.96 | (0.88, 1.04) | −0.010 | (−0.028, 0.009 |
| Baseline inpatient visit count | 1.05 | (0.90, 1.23) | 0.011 | (−0.023, 0.045) |
| Log of total costs | 1.12 | (1.05, 1.19) | 0.024 | (0.011, 0.037) |
MPR, medication possession ratio; ER, emergency room.
Boldfaced estimates indicate statistical significance (p-value ≤0.05).