Table 2 Results from subgroup analyses of the net change in SBP and DBP
Subgroup Analysis | SBP | DBP | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
No. of Studies | Net Change, mmHg | 95% Cl | heterogeneity | P | No. of Studies | Net Change, mmHg | 95% Cl | heterogeneity | P | |||
I2, % | P Value | I2, % | P Value | |||||||||
Duration of intervention | ||||||||||||
≥6 months | 8 | −3.97 | −6.38 to −1.57 | 82 | <0.00001 | 0.81 | 7 | −1.39 | −2.53 to −0.26 | 55 | 0.04 | 0.23 |
<6 months | 5 | −3.4 | −7.41 to 0.60 | 86 | <0.00001 | 3 | −2.61 | −4.28 to −0.95 | 53 | 0.12 | ||
Intervention scenario setting | ||||||||||||
hospital | 4 | −2.59 | −4.97 to −0.21 | 57 | 0.07 | 0.37 | 8 | −1.66 | −2.88 to −0.43 | 67 | 0.004 | 0.45 |
primary care clinics | 9 | −4.28 | −7.06 to −1.50 | 85 | <0.00001 | 2 | −2.45 | −4.09 to −0.81 | 21 | 0.26 | ||
Average age | ||||||||||||
≥60 years | 4 | −5.59 | −8.66 to −2.52 | 79 | 0.003 | 0.17 | 3 | −2.15 | −4.17 to −0.14 | 84 | 0.002 | 0.62 |
<60years | 9 | −2.67 | −5.41 to 0.07 | 85 | <0.00001 | 7 | −1.55 | −2.83 to −0.26 | 47 | 0.08 | ||
Total follow-up | ||||||||||||
≥200 | 7 | −4.49 | −6.93 to −2.06 | 88 | <0.00001 | 0.34 | 5 | −1.38 | −2.26 to −0.51 | 43 | 0.14 | 0.40 |
<200 | 6 | −2.38 | −5.95 to 1.19 | 67 | 0.01 | 5 | −2.43 | −4.70 to −0.16 | 61 | 0.04 | ||
Take antihypertensive drugs at baseline | ||||||||||||
Yes | 6 | −4.56 | −7.95 to −1.18 | 90 | <0.00001 | 0.35 | 3 | −1.9 | −3.62 to −0.17 | 85 | 0.001 | 0.88 |
No | 7 | −2.75 | −4.48 to −1.02 | 37 | 0.14 | 7 | −1.72 | −3.11 to −0.33 | 43 | 0.11 | ||
Uncontrolled blood pressure at baseline | ||||||||||||
Yes | 7 | −4.4 | −7.26 to −1.53 | 82 | <0.00001 | 0.51 | 5 | −1.06 | −2.06 to −0.06 | 31 | 0.21 | 0.09 |
No | 6 | −2.98 | −6.09 to 0.13 | 83 | <0.00001 | 5 | −2.47 | −3.73 to −1.21 | 49 | 0.1 | ||
