Table 2.
Treatment group, mean (SD) |
Control group, mean (SD) |
Intervention effect |
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---|---|---|---|---|---|---|---|---|---|---|---|---|
Baseline | 4 Months | 8 Months | P-value BL-8 M | Baseline | 4 Months | 8 Months | P-value BL-8 M | Unadjusted | p-Value | Adjusteda | P-value | |
Systolic BP, mm Hg | 145.1 (14.4) | 128.6 (15.0) | 125.1 (12.8) | <0.001 | 142.7 (13.2) | 136.0 (13.9) | 138.4 (12.4) | <0.001 | −7.7 (−9.7, −5.7) | <0.001 | −6.2 (−8.4, −4.0) | <0.001 |
Diastolic BP, mm Hg | 84.5 (10.1) | 77.0 (8.6) | 77.1 (7.9) | <0.001 | 82.7 (9.5) | 80.7 (8.6) | 82.5 (7.4) | 0.829 | −2.8 (−4.1, −1.5) | <0.001 | −2.8 (−4.3, −1.4) | <0.001 |
Controlled BP (diabetic definition), n (%) | 15 (19.2) | 54 (73.0) | 65 (83.3) | <0.001 | 18 (17.5) | 51 (50.5) | 44 (42.7) | <0.001 | 3.0 (2.0, 4.6) | <0.001 | 3.2 (1.9, 5.4) | <0.001 |
Appointment keeping scale, 1–4, 4 = greatest compliance | 3.6 (0.5) | 3.8 (0.3) | 3.8 (0.3) | 0.004 | 3.6 (0.4) | 3.7 (0.4) | 3.7 (0.3) | 0.121 | 0.0 (−0.0, 0.1) | 0.266 | 0.01 (−0.1, 0.1) | 0.582 |
Abbreviations: BP, blood pressure.
Intervention effect reports the beta coefficient of the interaction of time point*intervention group for linear regression models. Odds ratios for study arm are reported for logistic models.
Sample sizes for BP outcomes: Control BL = 103, 4-mo = 101, 8-mo = 103; Intervention BL = 78, 4-mo = 74, 8-mo = 78.
Sample sizes for medication adherence: Control BL = 52, 4-mo = 46, 8-mo = 52; Intervention BL = 39, 4-mo = 37, 8-mo = 39.
Sample sizes for appointment keeping: Control BL = 73, 4-mo = 67, 8-mo = 73; Intervention BL = 55, 4-mo = 50, 8-mo = 55.
Adjusted for age, sex, education, nativity, years in US, time-varying: weightbody mass index, current smoking, insurance, PCP, recommended weekly physical activity, adding salt to food after serving, alcohol use.