Multivariate analysis of pregnancy outcomes by pre-pregnancy body mass index category among women who gained excessive weight during pregnancy.

Multivariate analysis of pregnancy outcomes by pre-pregnancy body mass index category among women who gained excessive weight during pregnancy.针对孕期体重增长过量的女性，按孕前体重指数（Body Mass Index, BMI）类别分组，对其妊娠结局开展多变量分析。