Dahlöf 1987

Methods	D: crossover C: unclear B: double WD: none J: 1‐1‐1 DU: 4w/2x1m/2x5m (5m washout)
Participants	N: 28/28 D: 20 migraine with, 8 without aura C: World Federation of Neurology Research Group F: 83% A: 18‐60 years DU: > 2 years S: Sweden
Interventions	P: 120 mg C: Placebo
Outcomes	R: not reported F: significantly better than placebo AU: significantly better than placebo HI: significantly better than placebo AEs: more with propranolol Dropouts‐AEs: not reported V: +
Notes	Available only as expanded abstract Long follow up suggesting no long‐lasting benefit of 1‐month treatment
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment (selection bias)	Unclear risk	B ‐ Unclear