| Methods | D: crossover C: unclear B: double WD: 20/56 J: 0‐1‐0 DU: ‐/2x3m (1m)/‐ | |
| Participants | N: 56/36 D: 12 migraine with, 44 without aura C: unclear F: 66% A: 18‐56 years DU: 1‐33 years S: probably neurology clinic in Glasgow | |
| Interventions | P: 120 mg C: Methysergide 3 mg | |
| Outcomes | R: 19/36 vs. 13/36 F: frequency lower with propranolol AU: not reported HI: not reported AEs: 12/36 vs. 16/36 Dropouts‐AEs: 0/56 vs. 3/56 V: (+) | |
| Notes | High dropout rate | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment (selection bias) | Unclear risk | B ‐ Unclear |