[Factors accountable for macrosomia incidence in a study with mothers and progeny attended at a Basic Unity of Health in Rio de Janeiro, Brazil].
OBJECTIVE
to investigate factors accountable for macrosomia incidence in a study with mothers and progeny attended at a Basic Unity of Health in Rio de Janeiro, Brazil.


METHODS
a prospective study, with 195 pairs of mothers and progeny, in which the dependent variable was macrosomia (weight at delivery > or =4,000 g -- independent of the gestational age or of other demographic variables), and socioeconomic, previous pregnancies/gestation course, biochemical, behavioral and anthropometric, the independent variables. Statistical analysis has been done by multiple logistic regression. Relative risk (RR) values have been estimated, based on the simple form: RR=OR/ (1 - I0) + (I0 versus OR), in which I0 is the macrosomia incidence in non-exposed people.


RESULTS
Macrosomia incidence was 6.7%, the highest value being found in the progeny of women > or =30 years old (12.8%), white (10.4%), with two or more children (16.7%), with male newborns (9.6%), with height > or =1.6 m (12.5%), with overweight or obesity as a nutritional pre-gestational state (13.6%), and with excessive gestational gain of weight (12.7%). The final model has shown that having two or more children (RR=3.7; CI95%=1.1-9.9), and having a male newborn (RR=7.5; CI95%=1.0-37.6) were the variables linked to the macrosomia occurrence.


CONCLUSIONS
macrosomia incidence was higher than the one observed in Brazil as a whole, but inferior to the one reported in studies from developed countries. Having two or more children and a newborn male were the factors accountable for the occurrence of macrosomia.
de Oliveira
Lívia Costa
LC
Instituto de Nutrição Josué de Castro, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil.
Pacheco
Alice Helena de Resende Nóra
AH
Rodrigues
Patricia Lima
PL
Schlüssel
Michael Maia
MM
Spyrides
Maria Helena Constantino
MH
Kac
Gilberto
G
D000328:Adult; D001938:Brazil; D005260:Female; D005320:Fetal Macrosomia / Q000453:epidemiology*; D006801:Humans; D015994:Incidence; D008430:Maternal-Child Health Centers; D011446:Prospective Studies; D055815:Young Adult