[Socioeconomic level as an error-generating variable in studies of ethnicity].
D001722:Birth Order; D001724:Birth Weight; D005006:Ethnicity; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D012959:Socioeconomic Factors; D013223:Statistics as Topic
Nível sócio-econõmico como uma variável geradora de erro em estudos de etnia.