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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 Headache frequency (post‐treatment) | 2 | 120 | Mean Difference (IV, Random, 95% CI) | ‐0.90 [‐1.58, ‐0.22] |
| 2 MIDAS score | 1 | Mean Difference (IV, Random, 95% CI) | Totals not selected |
