Lack of correlation between contraceptive pills and Down's syndrome

Abstract
A case-control study was made on the use of oral contraceptives before pregnancy and the birth of an infant with Down''s syndrome. Controls were matched for age and parity and selected from the Medical Birth Register. Information on pill usage was obtained from the Swedish standardized maternity health record which contains dates for when the woman stopped using the pill and for last menstrual period. There was no indication of any relation between the use of oral contraceptive and Down''s syndrome.

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