Table 3.
Logistic Regression Models Predicting Nonadherence to Medications from PTSD, Demographic and Clinical Covariates, and Medication Concernsa
| Characteristic | Model 1 (N=535) | Model 2 (N=532) | Model 3 (N=532) |
|---|---|---|---|
| PTSD | 1.05 (1.03–1.06) | 1.04 (1.01–1.06) | 1.02 (1.00–1.05) |
| Age | … | 0.98 (0.96–1.00) | 0.98 (0.96–1.00) |
| Female | … | 1.28 (0.86–1.92) | 1.26 (0.84–1.90) |
| Black or African American | … | 0.80 (0.55–1.15) | 0.85 (0.59–1.24) |
| Income <$15,000/y | … | 1.01 (0.67–1.52) | 1.00 (0.66–1.52) |
| Charlson comorbidity index score | … | 1.09 (0.99–1.19) | 1.07 (0.98–1.18) |
| Stroke impact severity (Rankin Scale score) | … | 0.97 (0.84–1.13) | 0.95 (0.82–1.18) |
| Years since last stroke/TIA | … | 1.17 (1.02–1.33) | 1.17 (1.02–1.34) |
| Depressive symptoms (PHQ-8 score ≥10) | … | 1.02 (0.97–1.08) | 1.02 (0.97–1.08) |
| Medication concerns (BMQ score) | … | … | 1.17 (1.10–1.25) |
Abbreviations: BMQ, Brief Medication Questionnaire; PCL-S, PTSD checklist (specific); PHQ-8, 8-item Patient Health Questionnaire; PTSD, posttraumatic stress disorder; TIA, transient ischemic attack.
a
Data are presented as odds ratio (95% confidence interval). Ellipses indicate not applicable.