Table 4

Multivariable regression of plant-based diet pattern (as a categorical measure) and birth weight stratified by ethnicity: white European and South Asians

VariablesWhite EuropeansSouth Asians
βP valueβP value
Prepregnancy weight (kg)4.1<0.0016.8<0.001
Maternal height (cm)9.4<0.001nsns
Parity (number of children)77.1<0.001nsns
Gestational age (weeks)168.6<0.001135.6<0.001
Smoking statusnsnsnsns
Infant sex (female=1)−130.4<0.001−122.80.002
Plant-based (fourth vs first quartile)−81.20.00270.50.07
  • White European r2=0.246, South Asian r2=0.155. The same covariates were included for each ethnic-specific model, but non-significant covariates (eg, ‘smoking’ in South Asians) were removed in the final model (denoted as ‘ns’). Smoking status was coded as follows: 0=never smoked, 1=quit smoking prepregnancy, 2=quit smoking during pregnancy or 3=currently smoking. Parity was reported as having 0, 1, 2, 3, 4, 5 or 6 (or more) children. White Europeans (n=2367) and South Asians (n=884).