Mean difference in the systolic blood pressure by subgroups
| Characteristics | Category | Intervention arm | Control arm | Net difference (95% CI) | P value | ||
| Number | Blood pressure change (SEM) | Number | Blood pressure change (SEM) | ||||
| Age | ≥60 years | 395 | −6.53 (1.12) | 364 | −0.42 (1.17) | −6.10 (−9.29 to −2.92) | 0.46 |
| <60 years | 522 | −6.05 (0.88) | 556 | −3.30 (0.87) | −2.75 (−5.19 to −0.32) | ||
| Gender | Male | 369 | −5.45 (1.03) | 358 | −2.42 (0.99) | −3.02 (−5.84 to −0.20) | 0.35 |
| Female | 549 | −6.80 (0.93) | 562 | −1.99 (0.95) | −4.81 (−7.44 to −2.17) | ||
| Baseline body mass index | ≥25 | 471 | −6.99 (0.98) | 504 | −0.81 (1.01) | −6.17 (−9.95 to -3.39) | 0.03 |
| <25 | 446 | −5.49 (0.98) | 416 | −3.79 (0.94) | −1.69 (−4.38 to 0.99) | ||
| H/o major CVD | Yes | 134 | −5.62 (1.80) | 111 | −2.48 (1.96) | −3.14 (−8.40 to 2.12) | 0.71 |
| No | 783 | −6.37 (0.75) | 809 | −2.11 (0.75) | −4.25 (−6.34 to −2.15) | ||
| Educational status | <8th grade | 454 | −6.52 (1.01) | 418 | −1.44 (1.12) | −5.08 (−8.04 to −2.12) | 0.76 |
| ≥8th grade | 463 | −6.05 (0.96) | 502 | −2.79 (0.88) | −3.25 (−5.82 to -0.69) | ||
| Marital status | Living with spouse | 766 | −6.02 (0.75) | 805 | −2.34 (0.76) | −3.68 (−5.79 to −1.57) | 0.30 |
| Widow/r/separated | 151 | −7.61 (1.85) | 115 | −1.04 (1.69) | −6.57 (−11.67 to −1.47) | ||