title: Use of various contraceptive methods and time of conception in a community-based population.
abstract: OBJECTIVE
  To investigate the association between method of contraception and time to conception in a normal community-based population.
  
  
  METHODS
  Prospective, cross-sectional, survey.
  
  
  METHODS
  Large comprehensive ambulatory women's health center.
  
  
  METHODS
  One thousand pregnant women at their first prenatal obstetrics visit were asked to complete a self-report questionnaire. The return to fertility was analyzed by type of contraceptive method, duration of use, and other sociodemographic variables.
  
  
  RESULTS
  Response rate was 80% (n=798). Mean age of the patients was 29.9+/-5 years. Seventy-five percent had used a contraceptive before trying to conceive: 80% oral contraceptives, 8% intrauterine device, and 7% barrier methods. Eighty-six percent conceived spontaneously. Contraceptive users had a significantly higher conception rate than nonusers in the first 3 months from their first attempt at pregnancy. Type of contraception was significantly correlated with time to conception. Pregnancy rates within 6 months of the first attempt was 60% for oral contraceptive users compared to 70 and 81% for the intrauterine device and barrier method groups, respectively. There was no correlation between time to conception and parity or duration of contraceptive use. Other factors found to be significantly related to time to conception were older age of both partners and higher body mass index.
  
  
  CONCLUSIONS
  Contraception use before a planned pregnancy does not appear to affect ease of conception. Type of method used, although not duration of use, may influence the time required to conceive.
authors.affiliation: Shilo Women's Health Center, General Health Services, Dan Petah Tikva District, Israel. bkaplan@netvision.net.il
authors.forename: Boris
authors.initials: B
authors.lastname: Kaplan
authors.forename: Ravit
authors.initials: R
authors.lastname: Nahum
authors.forename: Yael
authors.initials: Y
authors.lastname: Yairi
authors.forename: Michael
authors.initials: M
authors.lastname: Hirsch
authors.forename: Josef
authors.initials: J
authors.lastname: Pardo
authors.forename: Yariv
authors.initials: Y
authors.lastname: Yogev
authors.forename: Raoul
authors.initials: R
authors.lastname: Orvieto
mesh_terms: D000328:Adult; D015992:Body Mass Index; D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D003430:Cross-Sectional Studies; D003625:Data Collection; D005260:Female; D005298:Fertility / Q000502:physiology*; D005306:Fertilization; D006801:Humans; D007434:Intrauterine Devices / Q000706:statistics & numerical data; D007557:Israel; D008393:Marriage; D008423:Maternal Age; D011247:Pregnancy; D011446:Prospective Studies; D011795:Surveys and Questionnaires; D013997:Time Factors
chemical_list: D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral