Table 2 Unadjusted risk of a cardiovascular event (5 year), mean systolic and diastolic blood pressure at 12-month follow up in the two comparison groups (AR vs NNT)
Risk presented as | Risk presented as | |||
|---|---|---|---|---|
Outcome | Absolute Risk | Number Needed to Treat | ||
(AR) | (NNT) | |||
(n = 205) | (n = 196) | |||
Cardiovascular risk n (%) | Baseline | 12 months | Baseline | 12 months |
0% to 9.9% | 40 (20%) | 26 (13%) | 36 (18%) | 29(15%) |
10% to 19.9% | 104 (51%) | 108 (53%) | 104 (53%) | 109 (56%) |
≥ 20% | 61 (30%) | 71 (35%) | 56 (29%) | 58 (30%) |
Mean cardiovascular risk (sd) | 16.4 (7.4) | 18.0 (7.6) | 16.8 (7.4) | 17.3 (7.7) |
Difference (se) | 1.6 (0.3) | 0.6 (0.4) | ||
Mean systolic BP mmHg (SD) | 152 (19) | 153(17) | 157 (18) | 154 (20) |
Difference (se) | -0.6 (1.3) | -3.4 (1.5) | ||
Mean diastolic BP mmHg (SD) | 85 (10) | 86 (9) | 86 (9) | 85 (9) |
Difference (se) | -0.3 (0.7) | -1.1 (0.8) | ||