contraception
Conditions
Interventions
Sponsors
National Research Institute for Family Planning
Eligibility
Sex/Gender
Female
Inclusion criteria
Inclusion criteria: To be eligible for enrolment, lacation women had to be healthy; To be aged from 20 years to 45 years; having had given birth before; having normal monthly bleeding (menstruation cycle was 21 to 42 days and regular, and menstrual period was less than 7 days); no irregular bleeding and no hydatidiform mole; uterine cavity was 5.5 to 9.0 cm (not include cesarean); having hemoglobin above 90 kilos per liter; having regular sex; relying solely on the IUD for fertility regulation; informed and agreed to take part in the study.
Exclusion criteria
Exclusion criteria: Contraindications included pregnancy, uterine abnormalities, evidence of vaginal or pelvic infections, uterine cavity length longer than 9 cm, cervical neoplasia, anemia.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| pregnancy;pregnancy;expulsions;all medical removals;use-related discontinuation; | — |
Countries
China
Contacts
Public ContactWu Shangchun
Outcome results
None listed