Table 1.
Comparison of Baseline Characteristics and Adherence of Commercially Insured and Medicaid Populations
| Commercial Insurance (n = 1,698) | Medicaid (n = 332) | P Value | |
|---|---|---|---|
| Age, years, mean (SD) [median] | 46.5 (10.6) [47.2] | 43.4 (11.2) [44.5] | < 0.0001 |
| Age range, n (%) | |||
| 18-29 | 150 (8.8) | 48 (14.5) | 0.0011a |
| 30-39 | 255 (15.0) | 64 (19.3) | |
| 40-49 | 597 (35.2) | 109 (32.8) | |
| 50-59 | 536 (31.6) | 95 (28.6) | |
| 60-69 | 151 (8.9) | 15 (4.5) | |
| 70+ | 9 (0.5) | 1 (0.3) | |
| Sex, n (%) | |||
| Female | 349 (20.6) | 203 (61.1) | < 0.0001 |
| Male | 1,349 (79.4) | 129 (38.9) | |
| CCI score, n (%) | |||
| 0 | 1,228 (72.3) | 157 (47.3) | < 0.0001b |
| 1 | 266 (15.7) | 91 (27.4) | |
| 2 | 120 (7.1) | 38 (11.4) | |
| ≥ 3 | 84 (4.9) | 46 (13.9) | |
| CCI, mean (SD) [median] | 0.5 (1.1) [0.0] | 1.1 (1.6) [1.0] | < 0.0001 |
| Comorbidities of interest, n (%) | |||
| HCV | 84 (4.9) | 58 (17.5) | < 0.0001 |
| MDD | 134 (7.9) | 73 (22.0) | < 0.0001 |
| Adherence, mean (SD) [median], % | |||
| PDC | 79 (26) [88] | 65 (29) [70] | < 0.0001 |
| Regimen, n (%) | |||
| MTR | 999 (58.8) | 247 (74.4) | < 0.0001 |
| STR | 699 (41.2) | 85 (25.6) | < 0.0001 |
aP value represents the difference in the percentage of younger patients in the Medicaid population compared with the commercial insurance population.
bP value represents the difference in the percentage of Medicaid patients with ≥ 2 comorbidities at baseline compared with the commercial insurance population.
CCI = Deyo-Charlson Comorbidity Index; HCV = hepatitis C virus; MDD = major depressive disorder; MTR = multiple-tablet regimen; PDC = proportion of days covered; SD = standard deviation; STR = single-tablet regimen.