The purpose of this study is to evaluate the contraceptive efficacy and safety of an oral contraceptive containing a combination of LNG 100mcg/EE 20mcg compared to LNG 150mcg/EE 30 mcg.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
1,008
Tablet, orally, opd
Tablet, orally, opd
Unnamed facility
Beijing, Beijing Municipality, China
NOT_YET_RECRUITINGUnnamed facility
Beijing, Beijing Municipality, China
The primary efficacy variable is the number of unintended pregnancies as measured by the Pearl Index (PI) during 13 cycles of treatment
Time frame: From fist dose to 13 treatment cycles (1 cycle=28 days)
Menstrual Cycle Control
Menstrual cycle control was evaluated by analyzing cycle characteristics, such as cycle length, the incidences of breakthrough bleeding, spotting, and amenorrhea and the duration and intensity of withdrawal bleeding. During the trial, spotting was defined as a light flow that did not necessitate sanitary protection, whereas bleeding was defined as a heavier flow that was similar to normal menstrual flow and necessitated sanitary protection.
Time frame: From fist dose to 13 treatment cycles (1 cycle=28 days)
Weight changes
Time frame: From fist dose to 13 treatment cycles (1 cycle=28 days)
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Unnamed facility
Chongqing, Chongqing Municipality, China
RECRUITINGUnnamed facility
Chongqing, Chongqing Municipality, China
RECRUITINGUnnamed facility
Guangzhou, Guangdong, China
RECRUITINGUnnamed facility
Shantou, Guangdong, China
RECRUITINGUnnamed facility
Zhongshan, Guangdong, China
RECRUITINGUnnamed facility
Guiyang, Guizhou, China
RECRUITINGUnnamed facility
Guiyang, Guizhou, China
RECRUITINGUnnamed facility
Wuhan, Hubei, China
RECRUITING...and 11 more locations