Quality items | No. of studies |
---|---|
Randomisation sequence generation: | |
- Adequate | 3 |
- Inadequate (quasi-RCT) | 9 |
- Unclear | 76 |
- Cluster design | 6 |
Allocation concealment: | |
- Unclear | 94 |
Blinding (any): | |
- Yes | 5 |
- No | 89 |
Sample representativeness: | |
- Very likely | 22 |
- Somewhat likely | 47 |
- Unlikely or can’t tell | 25 |
Sample size calculated: | |
- Yes | 3 |
- Unclear or No | 91 |
Comparability between groups: | |
- Reported no significant differences | 87 |
- Some difference or can’t tell | 7 |
Contamination between arms: | |
- Unlikely | 18 |
- Somewhat likely | 68 |
- Very likely | 8 |
Loss to follow up: | |
- Reported | 22 |
- No reported | 72 |
Outcomes reported: | |
- Blood pressure | 48 |
- Hypertension treatment | 54 |
- Adequate hypertension control | 56 |