Table 3.
Blood-pressure outcomes
| Outcome | Intervention group | Control group | Intervention effect | P valued |
|---|---|---|---|---|
| Home SBP: means (SD), mm Hg | ||||
| At baseline | 142.9 (10.3) | 144.0 (10.2) | n.s. | |
| At 6 months | 131.1 (12.4) | 144.8 (12.9) | −13.7 (−20.8 to −6.6)a | <0.001 |
| Change | −11.8 (10.0) | 0.8 (12.8) | −12.6 (−19.1 to −6.2)b | <0.001 |
| Home DBP: means (SD), mm Hg | ||||
| At baseline | 90.1 (8.3) | 88.2 (7.8) | n.s. | |
| At 6 months | 82.3 (10.1) | 87.3 (10.3) | −5.0 (−10.7 to 0.8)a | 0.088 |
| Change | −7.8 (7.1) | −0.9 (7.3) | −6.9 (−11.0 to −2.9)b | 0.001 |
| Office SBP: means (SD), mm Hg | ||||
| At baseline | 140.4 (10.5) | 141.6 (14.7) | n.s. | |
| At 6 months | 131.8 (12.2) | 139.8 (15.8) | −8.0 (−15.9 to −0.1)a | 0.058 |
| Change | −8.6 (10.7) | −1.8 (16.6) | −6.8 (−14.5 to 1.0)b | 0.087 |
| Office DBP: means (SD), mm Hg | ||||
| At baseline | 84.2 (9.8) | 82.1 (6.7) | n.s. | |
| At 6 months | 80.3 (10.0) | 80.8 (11.0) | −0.5 (−6.4 to 5.5)a | n.s. |
| Change | −3.9 (9.6) | <0.001 (10.5) | −3.9 (−9.6 to 1.8)b | n.s. |
| Hypertension control at 6 months, % | ||||
| Home BP <130/80 mm Hg | 55.6 | 16.7 | 3.3 (1.3 to 8.7)c | 0.004 |
| Office BP <135/85 mm Hg | 63 | 25 | 2.5 (1.2 to 5.3)c | 0.007 |
Abbreviations: BP, blood pressure; DBP, diastolic blood pressure; SBP, systolic blood pressure.
aShown is the difference in mean at 6 months and 95% confidence interval.
bShown is the difference in mean change and 95% confidence interval.
cShown is the relative risk and 95% confidence interval.
dFor blood pressure, P values were calculated by the t-test. For hypertension control at 6 months, P values were calculated by the chi-square test.