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THE OUTCOME OF PREGNANCY IN FORMER ORAL CONTRACEPTIVE USERS
Author(s) -
Royal Collegeof General Practitioners' Oral Contraception study
Publication year - 1976
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.1471-0528.1976.tb00897.x
Subject(s) - pill , abortion , medicine , obstetrics , family planning , pregnancy , oral contraceptive pill , gynecology , developed country , research methodology , population , genetics , environmental health , pharmacology , biology
Summary As part of a continuing major prospective survey, the outcome of 5530 pregnancies in former oral contraceptive (pill) users was compared with the outcome of 11 009 pregnancies in the control series of women who had never used the pill. In former pill users there was a significantly higher induced abortion rate. There was no increase in the leported spontaneous abortion rate, and there is evidence to suggest that the true spontaneous abortion rate may be materially lower in former pill users. The previous use of oral contraceptives appeared to have no adverse effect on subsequent births.