Comparison 26. Half‐dose Yuzpe versus standard Yuzpe.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Observed number of pregnancies (all women)	1	1323	Risk Ratio (M‐H, Fixed, 95% CI)	1.41 [0.76, 2.61]
2 Any side effect	1	1288	Risk Ratio (M‐H, Fixed, 95% CI)	0.85 [0.77, 0.93]
3 Specific side effects	1		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
3.1 Nausea	1	1288	Risk Ratio (M‐H, Fixed, 95% CI)	0.86 [0.77, 0.97]
3.2 Vomiting	1	1275	Risk Ratio (M‐H, Fixed, 95% CI)	0.50 [0.36, 0.69]
3.3 Headache	1	1288	Risk Ratio (M‐H, Fixed, 95% CI)	0.92 [0.68, 1.24]
3.4 Dizziness	1	1288	Risk Ratio (M‐H, Fixed, 95% CI)	0.66 [0.40, 1.07]
3.5 Abdominal pain	1	1288	Risk Ratio (M‐H, Fixed, 95% CI)	0.77 [0.43, 1.37]