[The influence of social and health factors including pregnancy weight gain rate and pre-pregnancy body mass on low birth weight of the infant].

to investigate the influence of social and health factors on low birth weight (LBW) among Polish women. LBW is defined as birth weight less than 2500 g.27,015 perinatal data gathered from 40 Polish hospitals taking part in the OBSQID international project.Descriptive statistics and multifactorial logistic regression. Dependent variable: LBW.maternal age, place of residence, marital status, education, parity, smoking, diseases before and during...