Table 3

Primary and secondary outcome measures comparing intervention arm to control arm: n (%) unless stated otherwise.

Intervention arm n = 743Control arm n = 677ICCOR (95% CI)P-value
Primary outcome measure
Controlled blood pressure272 (36.6)232 (34.3)0.0351.23 (0.85 to 1.78)0.27
Secondary outcome measures
Categorical outcome measuresOR (95% CI)
BP <140/80mmHg245 (33.0)202 (29.8)0.0411.27 (0.86 to 1.89)0.23
Prescribed antihypertensives526 (70.8)471 (69.6)0.0501.30 (0.85 to 1.97)0.23
Prescribed >50% of max dose of antihypertensives301 (58.2)248 (53.1)0.0331.50 (1.03 to 2.17)0.03
Satisfied with care (versus neither/dissatisfied) [161]560 (83.7)504 (85.4)0.0070.84 (0.59 to 1.19)0.32
Continuous outcome measuresDifference 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 measuresRR (95% CI)
Number of antihypertensive drugs prescribed0.0541.07 (0.91 to 1.26)0.42
 0217 (29.2)206 (30.4)
 1180 (24.2)157 (23.2)
 2181 (24.4)165 (24.4)
 3115 (15.5)111 (16.4)
 441 (5.5)27 (4.0)
 56 (0.8)9 (1.3)
 63 (0.4)2 (0.3)
 Median (IQR)1(0,2)1(0,2)
Number of BP consultations [17]0.1741.50 (1.25 to 1.80)<0.001
 024 (3.3)54 (8.1)
 173 (10.0)122 (18.2)
 2108 (14.7)114 (17.0)
 3117 (16.0)99 (14.8)
 491 (12.4)89 (13.3)
 582 (11.2)63 (9.4)
 ≥6238 (32.5)129 (19.3)
 Rate/year4.93.7
  • [] = missing values. BP = blood pressure. ICC = intraccluster correlation coefficient. OR = odds ratio. RR = rate ratio.