The impact of information-guidance type of genetic counselling was evaluated for the family planning of 2082 consultants. The understanding of the risks, parental decision, and the number of induced and spontaneous abortions were evaluated by the use of questionnaires. The stillbirths, livebirths, infant deaths, and babies with inherited or congenital anomalies were checked by experts. When pregnancy was recommended the rate deterred was 4.7% while this rate was 61.7% and 60.7% when pregnancy was not recommended or pregnancy required consideration. When pregnancy was not recommended, 43.5% of offspring had congenital anomalies, while this value fitted with random risk (4%) in offspring born after recommended pregnancies.
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