Table 5.
Cox Proportional Hazards for First Discontinuation in Year Following Uptake by Group.
| Demographic predictor | At risk (n) | Events (n) | Time to first discontinuation (d) | 95% CI | HR a | P value b | 95% CI |
|---|---|---|---|---|---|---|---|
| Uptake cohort | 1245 | 811 | 129 | [106, 166] | — | — | — |
| Insurance type | |||||||
| Private | 1055 | 661 | 166 | [131, 198] | — | — | — |
| Public | 190 | 150 | 51 | [37, 74] | 1.61 | 1.57E-07 | [1.35, 1.92] |
| Race/ethnicity | |||||||
| White | 1122 | 707 | 161.5 | 125, 192 | — | — | — |
| Black | 42 | 32 | 60.5 | [32, 241] | 1.45 | .03823126 | [1.02, 2.07] |
| Hispanic | 81 | 72 | 34 | [29, 64] | 2.17 | 4.18E-10 | [1.7, 2.77] |
| Insurance type + Race/ethnicity (binary) | |||||||
| Private + white | 1005 | 623 | 169 | [137, 202] | — | — | — |
| Private + Diverse c | 50 | 38 | 63 | [33, 216] | 1.44 | .02860301 | [1.04, 2.00] |
| Public + white | 117 | 84 | 73 | [43, 201] | 1.31 | .02131188 | [1.04, 1.64] |
| Public + Diverse c | 73 | 66 | 32 | [29, 58] | 2.43 | 9.41E-12 | [1.88, 3.14] |
Abbreviation: CI, confidence interval.
a
HRs are defined compared with referent group; referent group for each predictor is first listed category.
b
The P value represents statistical testing based on likelihood ratio for comparison of HRs.
c
“Diverse” refers to a combined group of “black” and “Hispanic” subjects.