Objective: To repor t on trends in neural tube defects in Wester n Australia, in relation to folate promotion, periconceptional use of folic acid supplements and food fortification with folate.
A series of studies was undertaken in 1989 to validate the data held by the Western Australian Congenital Malformations Registry. Comparison with hospital discharge data identified 1585 children six years of age or younger with malformations discharged from hospitals in Westem Australia in 1986.226 of whom were not already recorded on the Congenital Malformations Register. When the records of a special register for cleft lip and palate were examined, all cases of facial cleft known to the special register were also recorded on the Malformations Register.
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