Evid Based Nurs 6:75 doi:10.1136/ebn.6.3.75
  • Treatment

Review: the Prentif cervical cap was as effective as the diaphragm in preventing pregnancy, and the FemCap was not

Cervical cap v diaphragm for contraception*

Outcome Number of trials Follow up Comparison Event rates RRI (95% CI) NNH (CI)
*Abbreviations defined in glossary; RRI, NNH, and CI calculated from data in article using a fixed effects model.
Pregnancy 1 24 months Prentif cap v diaphragm 15.4% v 12.4% 21% (−10 to 61) Not significant
1 6 months FemCap v diaphragm 9.5% v 5.5% 71% (1 to 187) 25 (13 to 660)

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