| Ref (type) | Population | Outcome, Interventions | Results and statistical analysis | Effect size | Favours |
| Adverse effects | |||||
|
Systematic review |
21 women with primary dysmenorrhoea Data from 1 RCT |
Adverse effects
0/10 (0%) with low-frequency TENS 0/11 (0%) with placebo TENS or tablet |
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