Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Restriction of daily activities
Systematic review	80 women Data from 1 RCT	Interference with daily activities with mefenamic acid with tolfenamic acid Absolute results not reported	Mean difference +0.54 95% CI –0.34 to +1.42 P = 0.23		Not significant
Systematic review	Women with primary dysmenorrhoea 2 RCTs in this analysis	Interference with daily activities with naproxen with other NSAIDS (1 RCT flurbiprofen, 1 RCT ibuprofen) Absolute results not reported	OR 0.63 95% CI 0.33 to 1.22 P = 0.17		Not significant
Absence from work or school
Systematic review	Women with primary dysmenorrhoea 2 RCTs in this analysis	Absence from work/school with naproxen with other NSAIDS (1 RCT flurbiprofen, 1 RCT ibuprofen) Absolute results not reported	OR 0.50 95% CI 0.19 to 1.36 P = 0.18		Not significant