Fig. 2
From: Impact of BMI and smoking in adolescence and at the start of pregnancy on birth weight
Associations between maternal factors and birth weight of first-born child. Results of univariable analyses presented as standardized beta (95 % CI) and beta (95 % CI)
The Beta-column show the effect on birth-weight (in gram) for each unit change given for maternal features in the left-hand column
aSmoking categorized as smoker or non-smoker
bDisposable income for the year before birth of the first child, income below median of the group 146 800 Swedish Crowns, index related to the year of 2015
c0-12 years of education
dBoth parents of the study participant born in Sweden