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. 2011 Nov 9;2011(11):CD003553. doi: 10.1002/14651858.CD003553.pub3

3. Withdrawal bleeding 50‐75‐125 μg LNG plus 30‐40‐30 μg EE versus 150 μg LNG plus 30 μg EE (Ramos 1989).

Months Triphasic LNG Monophasic LNG Monophasic NET
0 to 3 39.4 42.6 45.9
4 to 6 88.1 89.7 89.7
7 to 9 95.2 96.0 94.4
10 to 12 93.9 93.7 94.2