Table 3 Independent effect of baseline characteristics on medication adherence^a

Adequate Visit Adherence

0.97 (0.91–1.03)

0.330

Male

1.01 (0.94–1.07)

0.885

Age (55–64 is the ref group)

 65–74

0.92 (0.85–0.98)

0.014

0.91 (0.85–0.97)

0.007

 ≥75

0.82 (0.75–0.89)

<0.001

0.81 (0.74–0.88)

<0.001

Race and Ethnicity (Black is reference group)

 Non-Black Hispanic

0.76 (0.69–0.82)

<0.001

0.75 (0.69–0.82)

<0.001

 Non-Black Non-Hispanic

1.45 (1.36–1.55)

<0.001

1.45 (1.36–1.55)

<0.001

Education (High school is the reference group)

 < High school

0.91 (0.85–0.97)

0.006

0.91 (0.85–0.97)

0.006

 Beyond high school

1.02 (0.95–1.09)

0.645

1.02 (0.95–1.09)

0.654

Has diabetes

0.96 (0.90–1.02)

0.207

Smoking (Current is reference group)

 Past

1.13 (1.05–1.22)

0.001

1.13 (1.05–1.21)

0.001

 Never

1.15 (1.06–1.24)

<0.001

1.14 (1.06–1.23)

<0.001

Self-assessed baseline health (Excellent is reference group)

 Very good

0.93 (0.82–1.06)

0.283

0.93 (0.82–1.06)

0.287

 Good

0.90 (0.80–1.02)

0.096

0.90 (0.80–1.02)

0.093

 Fair

0.79 (0.70–0.90)

<0.001

0.79 (0.70–0.90)

<0.001

 Poor

0.94 (0.77–1.14)

0.515

0.94 (0.77–1.14)

0.509

 Unknown

0.89 (0.59–1.35)

0.590

0.89 (0.59–1.34)

0.568

Practice type (Private is reference group)

 Group

1.56 (1.44–1.70)

<0.001

1.56 (1.44–1.70)

<0.001

 HMO

2.00 (1.68–2.39)

<0.001

2.01 (1.68–2.40)

<0.001

 Community Health Center

1.22 (1.10–1.36)

<0.001

1.22 (1.10–1.36)

<0.001

 University

1.22 (1.10–1.35)

<0.001

1.21 (1.10–1.34)

<0.001

 Other

1.70 (1.52–1.90)

<0.001

1.70 (1.52–1.90)

<0.001

 VAMC

1.18 (1.08–1.29)

<0.001

1.18 (1.08–1.28)

<0.001

 Unknown

1.46 (1.28–1.68)

<0.001

1.48 (1.29–1.70)

<0.001

Baseline Medications (Untreated is reference group)

 On drug therapy < 2 months

1.24 (1.13–1.35)

<0.001

1.23 (1.13–1.35)

<0.001

 On drug therapy ≥ 2 months

1.11 (0.94–1.30)

0.225

1.11 (0.94–1.30)

0.224

HDL Cholesterol < 35 mg/dl

1.03 (0.94–1.12)

0.585

Taking aspirin

1.14 (1.07–1.21)

<0.001

1.13 (1.07–1.20)

<0.001

Possible disability

0.91 (0.84–0.99)

0.033

0.91 (0.84–0.99)

0.022

ASCVD (No ASCVD is reference group)

 Yes

0.94 (0.87–1.01)

0.082

0.95 (0.89–1.01)

0.117

 Sub-clinical

0.76 (0.71–0.82)

<0.001

0.77 (0.72–0.83)

<0.001

BMI > 30

1.05 (0.99–1.11)

0.105

Decile of clinic enrollment volume

1.05 (1.04–1.06)

<0.001

1.05 (1.04–1.06)

<0.001

Randomized treatment group (Chlorthalidone is reference group)

 Amlodipine

0.99 (0.93–1.05)

0.722

0.99 (0.93–1.05)

0.722

 Lisinopril

0.92 (0.86–0.98)

0.010

0.92 (0.86–0.98)

0.012