6.1 Study design |
21 |
6794 |
Risk Ratio (M‐H, Random, 95% CI) |
1.33 [1.19, 1.49] |
6.1.1 Cross‐over |
7 |
1127 |
Risk Ratio (M‐H, Random, 95% CI) |
1.81 [1.44, 2.26] |
6.1.2 Parallel |
14 |
5667 |
Risk Ratio (M‐H, Random, 95% CI) |
1.25 [1.12, 1.39] |
6.2 Allocation concealment |
21 |
|
Risk Ratio (M‐H, Random, 95% CI) |
Subtotals only |
6.2.1 Low |
8 |
2365 |
Risk Ratio (M‐H, Random, 95% CI) |
1.50 [1.19, 1.89] |
6.2.2 Unclear |
13 |
4429 |
Risk Ratio (M‐H, Random, 95% CI) |
1.25 [1.12, 1.40] |
6.3 Source of funding |
21 |
|
Risk Ratio (M‐H, Random, 95% CI) |
Subtotals only |
6.3.1 Pharmaceutical |
17 |
6332 |
Risk Ratio (M‐H, Random, 95% CI) |
1.29 [1.16, 1.43] |
6.3.2 Non‐pharmaceutical |
2 |
104 |
Risk Ratio (M‐H, Random, 95% CI) |
4.22 [1.50, 11.84] |
6.3.3 Unclear |
2 |
358 |
Risk Ratio (M‐H, Random, 95% CI) |
1.76 [1.22, 2.54] |
6.4 Reported in a journal |
21 |
|
Risk Ratio (M‐H, Random, 95% CI) |
Subtotals only |
6.4.1 Journal report |
15 |
5175 |
Risk Ratio (M‐H, Random, 95% CI) |
1.34 [1.18, 1.52] |
6.4.2 Registry or abstract only |
6 |
1619 |
Risk Ratio (M‐H, Random, 95% CI) |
1.26 [0.94, 1.71] |
6.5 Sample size |
21 |
6794 |
Risk Ratio (M‐H, Random, 95% CI) |
1.33 [1.19, 1.49] |
6.5.1 Sample size ≤ 50 |
2 |
104 |
Risk Ratio (M‐H, Random, 95% CI) |
4.22 [1.50, 11.84] |
6.5.2 Sample size > 50 |
19 |
6690 |
Risk Ratio (M‐H, Random, 95% CI) |
1.31 [1.18, 1.46] |