Table 3

Summary of pregnancy outcomes

Pregnancy outcome# effect sizesRR95% CIP value (RR)Q statisticP value (Q)I-squared
Pregnancy (clinical and self-reported)3 RCTs1.361.07 to 1.730.010.430.810.00
Pregnancy (clinical only)1 RCT1.090.51 to 2.320.85
Pregnancy (self-reported only)2 RCTs1.401.08 to 1.800.010.060.810.00
Pregnancy (clinical only)1 observational0.350.15 to 0.860.01
  • OPK, ovulation predictor kit; RCT, randomised controlled trial; RR, risk ratio comparing using OPKs to not using OPKs for fertility management.