Comparison of medical abortion with surgical vacuum aspiration: women's preferences and acceptability of treatment

R C Henshaw, S A Naji, I T Russell, A A Templeton
BMJ: British Medical Journal 1993 September 18, 307 (6906): 714-7

OBJECTIVES: To assess women's preferences for, and the acceptability of, medical abortion and vacuum aspiration in the early first trimester.

DESIGN: Patient centred, partially randomised trial. Medical abortion was performed with mifepristone 600 mg followed 48 hours later by gemeprost 1 mg vaginal pessary. Vacuum aspiration was performed under general anaesthesia.

SETTING: Teaching hospital in Scotland.

PATIENTS: 363 women undergoing legal induced abortion at less than nine weeks' gestation.

MAIN OUTCOME MEASURES: Women's preferences for method of abortion before abortion; acceptability judged two weeks after abortion by recording the method women would opt to undergo in future and by semantic differential rating technique.

RESULTS: 73 (20%) women preferred to undergo medical abortion, and 95 (26%) vacuum aspiration; 195 (54%) were willing to undergo either method, and were allocated at random. Both procedures were highly acceptable to women with preferences. Gestation had a definite effect on acceptability in randomised women; at less than 50 days there were no differences, but between 50 and 63 days vacuum aspiration was significantly more acceptable.

CONCLUSIONS: Women who wish to use a particular method should be allowed their choice, regardless of gestation. Women of 50-63 days' gestation without preferences for a particular method are likely to find vacuum aspiration more acceptable. A patient centred, partially randomised trial design may be a useful tool in pragmatic research.

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