Study | Country Study period |
Population source | Exposure definition | Non-exposure definition | Sample size | Rmk |
---|
Study | Country Study period |
Case | Control | Sample size | Rmk |
---|---|---|---|---|---|
Medveczky, 2004 |
Hungary 1980 - 1996 |
Newborn infants (including infant deaths and usual stillborn fetuses) with Neural tube defects with non-syndromic (i.e. isolated anencephaly, spina bifida aperta/cystica, encephalocele). | Newborn infants (including infant deaths and usual stillborn fetuses) without congenital abnormalities. | 1202 / 38151 | Study design completed with other studies published on the Hungarian Case-Control Surveillance of Congenital Abnormalities (HCCSCA). |