Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Adverse effects
Systematic review	96 women Data from 1 RCT	All adverse effects with aspirin with fenoprofen Absolute results not reported	OR 1.46 95% CI 0.52 to 4.08 P = 0.47		Not significant
Systematic review	Women with primary dysmenorrhoea 2 RCTs in this analysis	Gastrointestinal adverse effects with aspirin with other NSAIDs (1 RCT fenoprofen, 1 RCT indomethacin) Absolute results not reported	OR 2.05 95% CI 0.84 to 4.96 P = 0.11		Not significant
Systematic review	96 women Data from 1 RCT	Neurological adverse effects with aspirin with fenoprofen Absolute results not reported	OR 3.20 95% CI 0.92 to 11.11 P = 0.067		Not significant