Objective Primary outcome was to compare neurodevelopmental outcome at two years in intracytoplasmic sperm injection (ICSI) conceived children versus matched controls. Secondary outcome was to determine incidence of major congenital malformations and study perinatal outcome. Design Prospective cohort study.Setting Tertiary care perinatal centre over a period of 13 months.

We recommend SOIUI as an effective treatment of suitable couples with male infertility, before embarking on IVF. However, if the initial percentage of motile sperm fell below 30%, or if after processing, the total motile sperm count was fewer than 1 million, these couples should consider in vitro fertilisation.

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