Table 4.
Results of Fully Adjusted Multivariate Logistic Regression, Modeling Nonadherence because of Cost
| Variable | Odds Ratio (95% confidence interval) | P value |
|---|---|---|
| Race/Ethnicity | .12 | |
| White | Reference | |
| Black | 1.28 (0.99,1.66) | |
| Hispanic | 1.19 (0.90,1.56) | |
| Age (continuous) | 0.96 (0.95,0.97) | <.001 |
| Gender | .34 | |
| Female | 0.93 (0.80,1.08) | |
| Number of prescriptions | <.001 | |
| 1–2 | Reference | |
| 3–4 | 1.23 (1.01,1.50) | |
| 5+ | 1.58 (1.29, 1.93) | |
| Number of chronic conditions (continuous) | 1.20 (1.14,1.27) | <.001 |
| Prescription drug coverage | <.001 | |
| Medicaid | 0.28 (0.21,0.36) | |
| Employer | 0.25 (0.21,0.31) | |
| Private/HMO | 0.59 (0.49,0.71) | |
| State | 0.74 (0.49, 1.11) | |
| Other public | 0.22 (0.15, 0.32) | |
| None | Reference | |
| Education | .89 | |
| Less than high school | Reference | |
| High school | 1.02 (0.85,1.22) | |
| At least 1 year of college | 1.06 (0.87,1.30) | |
| Income | <.001 | |
| ≤100% FPL | 2.26 (1.81,2.83) | |
| 100–200% FPL | 1.86 (1.57, 2.20) | |
| >200%FPL | Reference |
*Model goodness of fit assessed using the Satterthwaite adjusted F test, with a p value of 0.27.