Table 2.
Independent effect of baseline characteristics on odds of adequate visit adherencea
| Odds ratio (95 % CI) - Multiple logistic regression | ||||
|---|---|---|---|---|
| Baseline characteristic | Full model | Reduced model | ||
| (N = 30,262) | P-value | (N = 30,262) | P-value | |
| Male | 1.07 (1.01–1.13) | 0.033 | 1.07 (1.01–1.13) | 0.029 |
| Age (55–64 is reference group) | ||||
| 65–74 | 1.38 (1.30–1.48) | <0.001 | 1.37 (1.29–1.46) | <0.001 |
| ≥75 | 1.34 (1.24–1.46) | <0.001 | 1.32 (1.22–1.43) | <0.001 |
| Race and Ethnicity (Black is reference group) | ||||
| Non-Black Hispanic | 0.94 (0.87–1.02) | 0.126 | 0.94 (0.87–1.01) | 0.100 |
| Non-Black Non-Hispanic | 1.98 (1.86–2.11) | <0.001 | 2.00 (1.88–2.13) | <0.001 |
| Education (High school is reference group) | ||||
| < High school | 0.96 (0.90–1.02) | 0.195 | ||
| Beyond high school | 1.01 (0.94–1.09) | 0.741 | ||
| Has Diabetes | 0.92 (0.87–0.98) | 0.010 | 0.92 (0.87–0.98) | 0.010 |
| Smoking (Current is ref group) | ||||
| Past | 1.19 (1.10–1.28) | <0.001 | 1.19 (1.11–1.29) | <0.001 |
| Never | 1.12 (1.04–1.20) | 0.004 | 1.12 (1.04–1.21) | 0.003 |
| Self-assessed baseline health (Excellent is reference group) | ||||
| Very good | 0.91 (0.80–1.03) | 0.137 | 0.91 (0.80–1.03) | 0.131 |
| Good | 0.89 (0.79–1.00) | 0.050 | 0.88 (0.78–1.00) | 0.042 |
| Fair | 0.80 (0.70–0.91) | <0.001 | 0.79 (0.70–0.90) | <0.001 |
| Poor | 0.52 (0.43–0.62) | <0.001 | 0.51 (0.43–0.61) | <0.001 |
| Unknown | 0.61 (0.42–0.89) | 0.010 | 0.60 (0.41–0.88) | 0.009 |
| Practice type (Private is reference group) | ||||
| Group | 1.23 (1.13–1.33) | <0.001 | 1.23 (1.14–1.33) | <0.001 |
| HMO | 0.58 (0.51–0.66) | <0.001 | 0.58 (0.51–0.66) | <0.001 |
| Community Health Center | 1.04 (0.95–1.15) | 0.406 | 1.04 (0.94–1.15) | 0.434 |
| University | 1.56 (1.41–1.73) | <0.001 | 1.56 (1.41–1.72) | <0.001 |
| Other | 1.15 (1.04–1.27) | 0.008 | 1.15 (1.04–1.27) | 0.007 |
| VAMC | 2.00 (1.82–2.19) | <0.001 | 2.00 (1.82–2.20) | <0.001 |
| Unknown | 0.41 (0.37–0.47) | <0.001 | 0.41 (0.37–0.47) | <0.001 |
| Baseline medications (Untreated is reference group) | ||||
| On drug therapy < 2 months | 1.41 (1.30–1.54) | <0.001 | 1.42 (1.30–1.54) | <0.001 |
| On drug therapy ≥ 2 months | 1.10 (0.94–1.28) | 0.233 | 1.10 (0.94–1.28) | 0.222 |
| HDL Cholesterol < 35 mg/dl | 1.09 (1.00–1.19) | 0.052 | 1.09 (1.00–1.19) | 0.048 |
| Taking aspirin | 1.20 (1.13–1.27) | <0.001 | 1.20 (1.13–1.27) | <0.001 |
| Possible disability | 2.04 (1.88–2.21) | <0.001 | 2.03 (1.87–2.20) | <0.001 |
| ASCVD (No ASCVD is reference group) | ||||
| Yes | 0.90 (0.84–0.97) | 0.003 | 0.90 (0.84–0.96) | 0.003 |
| Sub–clinical | 1.03 (0.96–1.11) | 0.447 | 1.03 (0.95–1.11) | 0.483 |
| BMI > 30 | 1.02 (0.97–1.08) | 0.453 | ||
| Decile of clinic enrollment volume | 1.03 (1.02–1.04) | <0.001 | 1.03 (1.02–1.04) | <0.001 |
| Randomized treatment group (Chlorthalidone is reference group) | ||||
| Amlodipine | 1.01 (0.95–1.07) | 0.774 | 1.01 (0.95–1.07) | 0.782 |
| Lisinopril | 0.84 (0.79–0.90) | <0.001 | 0.84 (0.79–0.90) | <0.001 |
aVisit Adherence is a dichotomous variable defined as poor if the patient’s “% visit adherence” was < 80 % and adequate if adherence was ≥ 80 %