Safety of postabortion sterilisation compared with interval sterilisation. A controlled study

406 women--about one-fifth of those requesting an induced abortion and sterilisation over a thirty-three-month period--volunteered to be allocated randomly to either a concurrent induced-abortion/sterilisation group or a group which was sterilised six weeks after abortion. The abortion-attributable and sterilisation-attributable complication rates of 3.8% and 5.2%, respectively, for the concurrent group did not differ significantly from the 6.7% and 6.9% rates for the interval group. The estimated 2%-10% of women who would have changed their minds must be set against the 4% of women who became pregnant again before being sterilised. Efforts should be made to identify women likely to regret sterilisation.