Table 3.
Primary and secondary outcome measures comparing intervention arm to control arm: n (%) unless stated otherwise.
| Intervention arm n = 743 | Control arm n = 677 | ICC | OR (95% CI) | P-value | |
|---|---|---|---|---|---|
| Primary outcome measure | |||||
| Controlled blood pressure | 272 (36.6) | 232 (34.3) | 0.035 | 1.23 (0.85 to 1.78) | 0.27 |
| Secondary outcome measures | |||||
| Categorical outcome measures | OR (95% CI) | ||||
| BP <140/80mmHg | 245 (33.0) | 202 (29.8) | 0.041 | 1.27 (0.86 to 1.89) | 0.23 |
| Prescribed antihypertensives | 526 (70.8) | 471 (69.6) | 0.050 | 1.30 (0.85 to 1.97) | 0.23 |
| Prescribed >50% of max dose of antihypertensives | 301 (58.2) | 248 (53.1) | 0.033 | 1.50 (1.03 to 2.17) | 0.03 |
| Satisfied with care (versus neither/dissatisfied) [161] | 560 (83.7) | 504 (85.4) | 0.007 | 0.84 (0.59 to 1.19) | 0.32 |
| Continuous outcome measures | Difference between means (95% CI) | ||||
| Mean systolic BP (SD) | 143.3 (19.5) | 143.1 (17.7) | 0.034 | −1.30 (−4.43 to 1.83) | 0.42 |
| Mean diastolic BP (SD) | 78.2 (10.2) | 77.9 (10.4) | 0.039 | −0.11 (−1.78 to 1.56) | 0.90 |
| Count outcome measures | RR (95% CI) | ||||
| Number of antihypertensive drugs prescribed | 0.054 | 1.07 (0.91 to 1.26) | 0.42 | ||
| 0 | 217 (29.2) | 206 (30.4) | |||
| 1 | 180 (24.2) | 157 (23.2) | |||
| 2 | 181 (24.4) | 165 (24.4) | |||
| 3 | 115 (15.5) | 111 (16.4) | |||
| 4 | 41 (5.5) | 27 (4.0) | |||
| 5 | 6 (0.8) | 9 (1.3) | |||
| 6 | 3 (0.4) | 2 (0.3) | |||
| Median (IQR) | 1(0,2) | 1(0,2) | |||
| Number of BP consultations [17] | 0.174 | 1.50 (1.25 to 1.80) | <0.001 | ||
| 0 | 24 (3.3) | 54 (8.1) | |||
| 1 | 73 (10.0) | 122 (18.2) | |||
| 2 | 108 (14.7) | 114 (17.0) | |||
| 3 | 117 (16.0) | 99 (14.8) | |||
| 4 | 91 (12.4) | 89 (13.3) | |||
| 5 | 82 (11.2) | 63 (9.4) | |||
| ≥6 | 238 (32.5) | 129 (19.3) | |||
| Rate/year | 4.9 | 3.7 | |||
[] = missing values. BP = blood pressure. ICC = intraccluster correlation coefficient. OR = odds ratio. RR = rate ratio.