Singleton and twin confinements associated with infertility treatments.

Abstract

A cross-sectional sample of 150 singleton and 159 twin confinements delivered in Western Australia in 1991 were randomly sampled in 1993; 63% of the women responded to a postal questionnaire. Thirteen percent of respondents with singletons and 26% of those with twins reported having problems conceiving at some stage in their life. Six percent of those who had singleton confinements and 22% of those women who had twin confinements sought fertility advice prior to the conception of the index pregnancy. One percent (95% CI 0.03%, 5.5%) of women with singletons received infertility treatment compared with 17% (95% CI 10.4%, 26.3%) of those with twins. Overall 82.7% (95% CI 75.2%, 90.1%) of twin ..