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Fig. 1 | BMC Pregnancy and Childbirth

Fig. 1

From: Association of smoking behavior among Chinese expectant fathers and smoking abstinence after their partner becomes pregnant: a cross-sectional study

Fig. 1

Features selection using the Lasso regression. a Lasso regression coefficients. b Lasso cross-validation (nfold = 5). LASSO coefficient profiles of the 27 features, including age, employment status, education level, annual family income, monthly alcohol use, regular activity, physical health status, mental health status, stress full events within 30 days, first time expectant fathers, living with smokers, wife is smoker, family APAGAR, prenatal education attendance, receiving smoking cessation advice, daily cigarette consumption before partner got pregnant, quit attempt before partner got pregnant, smoke outside the home only, year of regular tobacco use, knowledge on the health hazards of smoking to smokers, knowledge on the health hazards of SHS to the pregnant women, knowledge on the health hazards of SHS to the fetus and newborns, attitude to ban smoking at home where there are pregnant, attitude to quit smoking for the health of baby, perception towards that smoking can negatively affect my health, perception toward that SHS can negatively affect the health of pregnant, perception toward that SHS can negatively affect the health of fetus and newborns, 19 features with nonzero coefficients was selected

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