E4 FREEDOM (Female Response Concerning Efficacy and Safety of Estetrol/Drospirenone as Oral Contraceptive in a Multicentric Study) - EU/Russia Study

On-treatment pregnancies are defined as pregnancies with an estimated date of conception within the in-treatment period i.e. Day 1 to 2 days after the last intake of investigational product (whether active or inactive tablet). The Pearl Index, defined as the number of pregnancies per 100 women-years of treatment was calculated as: Pearl Index = (1300*number of on-treatment pregnancies)/number of women 28-day equivalent cycles of treatment. The method failure Pearl Index includes only those pregnancies that were classified as method failure and not the pregnancies due to user failure, i.e. incorrect intake of the contraceptive method. Only at-risk cycles were included in the denominator of the Pearl Index calculation. At-risk-cycles were defined as cycles in which no other methods of birth control (including condoms) were used by the subject as confirmed in the subject diary and during which the subject confirmed that sexual intercourse had occurred.

On-treatment pregnancies are defined as pregnancies with an estimated date of conception within the in-treatment period i.e. Day 1 to 2 days after the last intake of investigational product (whether active or inactive tablet). The Pearl Index, defined as the number of pregnancies per 100 women-years of treatment was calculated as: Pearl Index = (1300*number of on-treatment pregnancies)/number of women 28-day equivalent cycles of treatment.Only at-risk cycles were included in the denominator of the Pearl Index calculation.

At-risk-cycles were defined as cycles in which no other methods of birth control (including condoms) were used by the subject as confirmed in the subject diary and during which the subject confirmed that sexual intercourse had occurred.

On-treatment pregnancies are defined as pregnancies with an estimated date of conception within the in-treatment period i.e. Day 1 to 2 days after the last intake of investigational product (whether active or inactive tablet). The Pearl Index, defined as the number of pregnancies per 100 women-years of treatment was calculated as: Pearl Index = (1300*number of on-treatment pregnancies)/number of women 28-day equivalent cycles of treatment. The method failure Pearl Index includes only those pregnancies that were classified as method failure and not the pregnancies due to user failure, i.e. incorrect intake of the contraceptive method. Only at-risk cycles were included in the denominator of the Pearl Index calculation. At-risk-cycles were defined as cycles in which no other methods of birth control (including condoms) were used by the subject as confirmed in the subject diary and during which the subject confirmed that sexual intercourse had occurred.

Unscheduled bleeding/spotting is defined as any bleeding/spotting that occurs while taking active hormones that does not meet the criteria for scheduled bleeding.

Unscheduled bleeding is defined as any bleeding that occurs while taking active hormones that does not meet the criteria for scheduled bleeding and/or spotting.

Unscheduled spotting is defined as any spotting that occurs while taking active hormones that does not meet the criteria for scheduled bleeding and/or spotting.

Scheduled bleeding/spotting is defined as any bleeding/spotting that occurs during the hormone-free interval (i.e. Days 25 - 28) and continues through Days 1-3 of the subsequent active cycle.

Scheduled bleeding and /or spotting is defined as any bleeding and/or spotting that occurs during the hormone-free interval (i.e. Days 25 - 28) and continues through Days 1-3 of the subsequent active cycle.

Vital signs included sitting systolic and diastolic blood pressures, and heart rate.

Laboratory assessment included blood hematology, biochemistry, and lipids

Physical examinations included an evaluation of body as a whole, skin, head, eyes, ears, nose, and throat, neck, cardiovascular, respiratory, musculoskeletal, neurologic, lymphatic/thyroid, abdomen.

When reporting the results of the physical examination, the use of the "Abnormal" category was reserved for findings that were considered clinically significant, in the opinion of the Investigator; the "Normal" category included "Abnormal" results that were not clinically significant, as well as no findings.

Gynecological examinations included breast examination (performed by palpation) and assessment of the adnexa, cervix, uterus, vagina, and external genitalia.

When reporting the results, the use of the "Abnormal" category was reserved for findings that were considered clinically significant, in the opinion of the Investigator; the "Normal" category included "Abnormal" results that were not clinically significant, as well as no findings.

Endometrial biopsies was obtained from a subset of subjects included in the endometrial safety substudy at the screening visit and at the end of treatment visit if the subject has completed at least 10 cycles.

The Q-LES-Q-SF is a self-report measure designed to assess the degree of enjoyment and satisfaction in daily functioning. Participants were asked to rate 16 different items on a 5-point scale where score 1 = very poor and score 5 = very good.

A raw total score is calculated by summing the first 14 items and ranges from 14 to 70 with a higher scores indicating higher life enjoyment and satisfaction. The raw total score is then transformed into a percentage maximum score using the following formula: (raw total score-minimum score)/(maximum possible raw score-minimum score).

In addition, the last two items (15 and 16) are two global items that are scored individually. These items rate "satisfaction with medicine" and "overall life satisfaction over the past week".

The Q-LES-Q-SF is a self-report measure designed to assess the degree of enjoyment and satisfaction in daily functioning. Participants were asked to rate 16 different items on a 5-point scale where score 1 = very poor and score 5 = very good.

A raw total score is calculated by summing the first 14 items and ranges from 14 to 70 with a higher scores indicating higher life enjoyment and satisfaction. The raw total score is then transformed into a percentage maximum score using the following formula: (raw total score-minimum score)/(maximum possible raw score-minimum score).

In addition, the last two items (15 and 16) are two global items that are scored individually. These items rate "satisfaction with medicine" and "overall life satisfaction over the past week".

The MDQ is a standard method for measuring cyclical perimenstrual symptoms. The participants rated common symptoms and feelings associated with menstruation using the following scale: 0 (no experience of symptom), 1 (present, mild), 2 (present, moderate), 3 (present, strong),and 4 (present, severe) observed during pre-menstrual (4 days before menstruation), menstrual (most recent flow) and intermenstrual (remainder of the cycle) phases.

Reported values are values at Cycle 13 minus values at Baseline. An overall positive change from baseline represents an increase in symptom or feeling severity.