Table 2.
Associations between high 1-year discount rate and low medication adherence (n = 235)
| Low K-Wood-MAS-4 adherence (score ≥ 1) | ||||
|---|---|---|---|---|
| Unadjusted PR (95% CI) |
Model 1 PR (95% CI) |
Model 2 PR (95% CI) |
Model 3 PR (95% CI) |
|
| High 1-year discount rate | 1.67*** (1.28, 2.17) |
1.56** (1.18, 2.06) |
1.63*** (1.22, 2.16) |
1.58** (1.18, 2.12) |
| Age | 0.98 (0.96, 1.00) |
0.98 (0.96, 1.00) |
0.98 (0.96, 1.00) |
|
| Female | 0.93 (0.73, 1.19) |
0.88 (0.68, 1.14) |
0.93 (0.72, 1.21) |
|
| Black race | 1.29 (0.99, 1.69) |
1.39* (1.06, 1.82) |
1.36* (1.03, 1.79) |
|
| Married | 1.02 (0.80, 1.30) |
0.99 (0.77, 1.27) |
1.00 (0.78, 1.28) |
|
| Greater than high school education | 1.28 (0.93, 1.75) |
1.40* (1.02, 1.92) |
1.29 (0.95, 1.76) |
|
| Hypertension diagnosed ≥10 years ago | 1.03 (0.78, 1.36) |
0.99 (0.75, 1.31) |
||
| Body mass index | 0.99 (0.97, 1.01) |
0.99 (0.97, 1.01) |
||
| ≥6 medications per day | 1.01 (0.77, 1.33) |
0.96 (0.74, 1.26) |
||
| ≥1 cardiometabolic comorbidity | 0.88 (0.66, 1.17) |
0.94 (0.71, 1.25) |
||
| Depressive symptoms | 1.61** (1.21, 2.14) |
1.45* (1.05, 2.01) |
||
| Low trust in healthcare provider | 1.05 (0.82, 1.34) |
|||
| High concerns beliefs about medications | 1.12 (0.86, 1.45) |
|||
| Low medication-taking self-efficacy | 1.17 (0.89, 1.55) |
Model 1 adjusted for age, sex, race, marital status, and education. Model 2 adjusted for covariates in Model 1 plus hypertension duration, body mass index, medication burden, cardiometabolic comorbidities, and depressive symptoms. Model 3 adjusted for covariates in Model 2 plus trust in healthcare provider, beliefs about medications, and medication-taking self-efficacy. Abbreviations: CI, confidence interval; K-Wood-MAS-4, 4-item Krousel-Wood Medication Adherence Scale; PR, prevalence ratio.
*P < 0.05, **P < 0.01, ***P < 0.001.