Document Detail

Is previous use of hormonal contraception associated with a detrimental effect on subsequent fecundity?
MedLine Citation:
PMID:  14747178     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: The effects of contraception on subsequent fecundity are yet to be substantiated. METHODS: A total of 2841 consecutive pregnant women in Hull and Sheffield completed questionnaires inquiring about time to pregnancy (TTP), contraceptive use, pregnancy planning, previous pregnancies, age and lifestyle characteristics of each partner. Outcome measures were mean TTP, conception probability and odds of subfecundity after discontinuing each contraceptive method. RESULTS: TTP following long-term combined oral contraceptive (COC), short-term intrauterine device (IUD) or any duration of injectable use were 2.0-, 1.6-, 3.0-fold longer than TTP after condom use, respectively. Within 6 months of discontinuing COC or injectable use, conception probabilities were 0.86 and 0.34, respectively, whereas those relevant to other methods were not significantly different. All levonorgestrel intrauterine system (IUS) users conceived within 1 month. Relative to condoms, odds of subfecundity after COC, injectable and short-term IUD use were 1.9, 5.5, 2.9, respectively. The effect of COC and injectables was stronger with long-term use, in older, obese or oligomenorrhoeic women. Similar results were obtained after adjustment for potential confounders. CONCLUSIONS: A significant reduction in fecundity occurs after COC, IUD or injectables, which is dependent on the duration of use. The effect of COC and injectables is evident in women with a potentially compromised ovarian function. Use of progesterone-only pills or IUS is not associated with a significant effect.
M A M Hassan; S R Killick
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Human reproduction (Oxford, England)     Volume:  19     ISSN:  0268-1161     ISO Abbreviation:  Hum. Reprod.     Publication Date:  2004 Feb 
Date Detail:
Created Date:  2004-01-28     Completed Date:  2004-09-24     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8701199     Medline TA:  Hum Reprod     Country:  England    
Other Details:
Languages:  eng     Pagination:  344-51     Citation Subset:  IM    
Postgraduate Medical Institute, Hull and York Medical School, Academic Department of Obstetrics and Gynaecology, Hull, UK. mamhassan!
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MeSH Terms
Contraceptive Agents, Female / administration & dosage*
Contraceptives, Oral, Combined / administration & dosage,  adverse effects*
Intrauterine Devices / adverse effects
Levonorgestrel / administration & dosage
Life Style
Logistic Models
Progesterone / administration & dosage
Time Factors
Reg. No./Substance:
0/Contraceptive Agents, Female; 0/Contraceptives, Oral, Combined; 57-83-0/Progesterone; 797-63-7/Levonorgestrel

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