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The effect of induced abortion on subsequent fertility
Author(s) -
Frank Peter,
Mcnamee Roseanne,
Hannaford Philip C.,
Kay Clifford R.,
Hirsch Sybil
Publication year - 1993
Publication title -
bjog: an international journal of obstetrics and gynaecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.157
H-Index - 164
eISSN - 1471-0528
pISSN - 1470-0328
DOI - 10.1111/j.1471-0528.1993.tb15313.x
Subject(s) - fertility , abortion , pregnancy , medicine , obstetrics , retrospective cohort study , prospective cohort study , gynecology , family planning , demography , population , research methodology , surgery , environmental health , sociology , biology , genetics
Objective To investigate the effect of induced abortion on subsequent fertility. Design 1. Prospective cohort study of women who had an unplanned pregnancy at recruitment. 2. Retrospective study of women who had a planned pregnancy at recruitment. Setting Joint Royal College of General Practitioners/Royal College of Obstetricians and Gynaecologists study based in general practice in England, Scotland and Wales, between 1976 and 1987. Subjects 1. Prospective study: Four hundred and thirty‐three women with a recruitment unplanned pregnancy ending in induced abortion (abortion group) and 1035 women with a recruitment unplanned pregnancy which ended naturally (nonabortion group). All subsequently had a planned pregnancy, or were known to be trying to conceive at some point during the follow‐up 2. Retrospective study: Nine thousand two hundred and ninety‐nine women who presented at recruitment with a planned pregnancy. Main outcome measure The women's estimated length of planning time, expressed as a fertility rate ratio. Results Induced abortion was not related to future fertility. In the prospective study, the fertility rate ratio (FRR) of the abortion group relative to the nonabortion group was 0.94 (95% CI0.83 to 1.07, P = 0.37). This result was supported by the retrospective study, which again showed no important difference between the two groups. Conclusion Induced abortion does not appear to have an important effect on future fertility.