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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 NON ‐ Healing | 1 | 22 | Odds Ratio (M‐H, Fixed, 95% CI) | 3.33 [0.46, 24.05] |
| 2 Headache | 1 | 22 | Odds Ratio (M‐H, Fixed, 95% CI) | 45.0 [3.47, 584.34] |
