Comparison 18. Triphasic NGM 180‐215‐250 μg and EE 25 μg versus monophasic DRSP 3 mg and EE 20 μg.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Pregnancy per woman within 3 cycles	1	334	Odds Ratio (M‐H, Random, 95% CI)	3.02 [0.12, 74.62]
2 Proportion of women with unscheduled bleeding episodes within 3 cycles	1	332	Odds Ratio (M‐H, Random, 95% CI)	0.42 [0.25, 0.70]
3 Unscheduled bleeding days in cycle 3	1	316	Mean Difference (IV, Random, 95% CI)	‐1.0 [‐1.57, ‐0.43]
4 Unscheduled bleeding days within 3 cycles	1	332	Mean Difference (IV, Random, 95% CI)	‐1.5 [‐2.75, ‐0.25]
5 Total discontinuation within 3 cycles	1	355	Odds Ratio (M‐H, Random, 95% CI)	1.16 [0.62, 2.17]
6 Discontinuations due to adverse events within 3 cycles	1	355	Odds Ratio (M‐H, Random, 95% CI)	0.74 [0.16, 3.36]