Ref (type) | Population | Outcome, Interventions | Results and statistical analysis | Effect size | Favours |
Absence from work or school | |||||
Systematic review |
24 women with primary dysmenorrhoea Data from 1 RCT |
Mean number of lost hours each menstrual cycle
1.46 hours with high-frequency TENS 1.42 hours with placebo TENS |
WMD +0.04 hours 95% CI –0.4 hours to +0.5 hours Randomisation and blinding unclear |
Not significant |