[Incidence of congenital malformations among births of foreign workers (author's transl)].

From 1967 to 1972 7.83% of the parturients delivered at the Department of Obstetrics and Gynecology II of the University of Vienna were foreign workers. From 1972 to 1978 the part of the foreign workers come to 21.31%. From 1967 to 1972 there was a highly significant prevalence of so-called "non-viable malformations" (p less than 0,001) among foreign workers and "severe external malformations" were significantly more common at the 5% level. In the period from 1972 to 1978 these differences were no longer as pronounced. Statistical significance was not reached for the so-called "non-viable malformations" in the period from 1972 to 1978. Only dysrhaphism continued to be significantly more common at the 1+ level. Among these malformations incomplete ventral fusion was significantly more frequent at the 5%.