Contraceptive failure is measured by the pregnancy rate calculated using the Pearl Index (PI). PI used all pregnancies, as determined by a positive urine and/or serum pregnancy test, except those for which the date of conception was before starting DR-103 or \> 7 days after stopping the combination EE/LNG treatment of DR-103. The estimated date of conception and gestational age of the fetus was determined by transvaginal or abdominal ultrasound. The PI is defined as number of contraceptive failures per 100 women-years of exposure: (100)\*(total number of pregnancies)\*(4)/(total number of 91-day cycles)

Contraceptive failure is measured by the pregnancy rate calculated using the Pearl Index (PI). PI used all pregnancies, as determined by a positive urine and/or serum pregnancy test, except those for which the date of conception was before starting DR-103 or \> 7 days after stopping the combination EE/LNG treatment of DR-103. The estimated date of conception and gestational age of the fetus was determined by transvaginal or abdominal ultrasound. The PI is defined as number of contraceptive failures per 100 women-years of exposure: (100)\*(total number of pregnancies)\*(4)/(total number of 91-day cycles)

Contraceptive failure is measured by the pregnancy rate calculated using the Pearl Index (PI). PI used all pregnancies, as determined by a positive urine and/or serum pregnancy test, except those for which the date of conception was before starting DR-103 or \> 7 days after stopping the combination EE/LNG treatment of DR-103. The estimated date of conception and gestational age of the fetus was determined by transvaginal or abdominal ultrasound. The PI is defined as number of contraceptive failures per 100 women-years of exposure: (100)\*(total number of pregnancies)\*(4)/(total number of 91-day cycles)

Contraceptive failure is measured by the pregnancy rate calculated using the Pearl Index (PI). PI used all pregnancies, as determined by a positive urine and/or serum pregnancy test, except those for which the date of conception was before starting DR-103 or \> 7 days after stopping the combination EE/LNG treatment of DR-103. The estimated date of conception and gestational age of the fetus was determined by transvaginal or abdominal ultrasound. In order to compare the efficacy of extended treatment with DR-103 to conventional 28-day cyclic oral contraceptive treatment, the 91-day DR-103 treatment cycle was separated into three 28-day cycle-equivalents, derived from the 84-day active combination (EE/LNG) pill period of each 91-day extended cycle. The PI is defined as number of contraceptive failures per 100 women-years of exposure: (100)\*(total number of pregnancies)\*(13)/(total number of 28-day cycles)

Contraceptive failure is measured by the pregnancy rate calculated using the Pearl Index (PI). PI used all pregnancies, as determined by a positive urine and/or serum pregnancy test, except those for which the date of conception was before starting DR-103 or \> 7 days after stopping the combination EE/LNG treatment of DR-103. The estimated date of conception and gestational age of the fetus was determined by transvaginal or abdominal ultrasound. In order to compare the efficacy of extended treatment with DR-103 to conventional 28-day cyclic oral contraceptive treatment, the 91-day DR-103 treatment cycle was separated into three 28-day cycle-equivalents, derived from the 84-day active combination (EE/LNG) pill period of each 91-day extended cycle. The PI is defined as number of contraceptive failures per 100 women-years of exposure: (100)\*(total number of pregnancies)\*(13)/(total number of 28-day cycles)

Contraceptive failure is measured by the pregnancy rate calculated using the Pearl Index (PI). PI used all pregnancies, as determined by a positive urine and/or serum pregnancy test, except those for which the date of conception was before starting DR-103 or \> 7 days after stopping the combination EE/LNG treatment of DR-103. The estimated date of conception and gestational age of the fetus was determined by transvaginal or abdominal ultrasound. In order to compare the efficacy of extended treatment with DR-103 to conventional 28-day cyclic oral contraceptive treatment, the 91-day DR-103 treatment cycle was separated into three 28-day cycle-equivalents, derived from the 84-day active combination (EE/LNG) pill period of each 91-day extended cycle. The PI is defined as number of contraceptive failures per 100 women-years of exposure: (100)\*(total number of pregnancies)\*(13)/(total number of 28-day cycles)

The on-treatment time frame spanned the time during which study drug was administered until 3 weeks beyond the last study drug date. Relationship to study drug was assessed by the investigator. Serious AEs (SAEs) are those that resulted in death, were life-threatening, required or prolonged inpatient hospitalization, resulted in persistent or significant disability/incapacity, congenital anomaly, or resulted in an important medical event that may have jeopardized the patient or required medical or surgical intervention.