| Methods | D: parallel (with optional crossover) C: unclear B: double WD: 48/148 J: 1‐1‐0 DU: 2m/4w/optional crossover for 6‐12 m | |
| Participants | N: 148/100 D: migraine C: Ad Hoc F: not reported A: not reported DU: not reported S: unclear, USA | |
| Interventions | P: 80‐160 mg C: Placebo | |
| Outcomes | R: not reported F: not reported AU: not reported HI: not reported AEs: not reported Dropouts‐AEs: not reported V: not interpretable | |
| Notes | Trial meets the inclusion criteria, but primarily investigates long‐term treatment with propranolol and includes only a 4‐week RCT, whose results, however, are not presented in detail | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment (selection bias) | Unclear risk | B ‐ Unclear |
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