To Compare SH T00658ID Over Ortho Tri-Cyclen Lo (US/Canada)

Estradiol valerate (EV) and dienogest (DNG). Sequential 4-phasic regimen. Daily oral administration of one encapsulated BAY86-5027 for 28 days per Cycle, for 13 treatment cycles: Days 1-2, 3.0 mg EV; Days 3-7, 2.0 mg EV+2.0 mg DNG; Days 8-24, 2.0 mg EV+3.0 mg DNG; Days 25-26, 1.0 mg EV; Days 27-28, placebo

Dose--Ethinylestradiol (EE) + Norgestimate (NGM) Triphasic 21-day regimen. Daily oral administration of one encapsulated Ortho Tri-Cyclen Lo for 28 days per Cycle, for 13 treatment cycles: Days 1-7, 0.025 mg EE+0.180 NGM; Days 8-14, 0.025 mg EE+0.215 NGM; Days 15-21, 0.025 mg EE+0.250 NGM; Days 27-28, placebo