Factors associated with the very high caesarean section rate in urban areas of Vietnam

delcae: mode of delivery (1=caesarean section, 0=vaginal birth) motage: mother's age (year) moteducodthree: mother's education level (Primary & Secondary =2, High school/ Intermediate degree=3, University/ Postgraduate=4) faminc: family income motaddoneurb: place of residence (1=urban, 0=rural) motchilcodtwo: parity prepro: prenancy problem bmi: pre-pregnancy body max index weight gain: gestational weight gain delpripub: place of birth (1=private, 0=public) babsex: baby's sex (1=male, 0=female) babweibir: baby's birth weight