Table 3

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

VariablesWhite EuropeansSouth Asians
βP valueβP value
Prepregnancy weight (kg)5.1<0.0015.3<0.001
Maternal height (cm)9.3<0.0016.00.01
Parity (number of children)73.8<0.00143.50.01
Gestational age (weeks)159.3<0.001 155.6<0.001
Smoking status−37.60.002nsns
Infant sex (female=1)−127.7<0.001−98.3<0.001
Plant-based (continuous)−65.9<0.00140.50.01
  • White European r2=0.246, South Asian r2=0.178. 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).