Results of unadjusted and multivariable group-based trajectory models estimating the relationship between time-stable explanatory variables and probability of group membership, and change in average group BMI Z-score as a function of time-dependent explanatory variables (QLSCD children from 4–10 y

aPlace factors plus social factors, model includes both time-stable (risk factors) and time-dependent explanatory variables.
bModel 1, plus adjustment for early life factors; model includes both time-stable (risk factors) and time-dependent explanatory variables.
cOdds ratios and 95% confidence intervals from multinomial logistic regression, reference group is the medium-high, slow increasing group.
dParameters represent the average increase/decrease in BMI Z-score per year within each trajectory group based on a polynomial link function.
eReference group is Urban.
*P≤ 0.05, **P ≤ 0.01 *** P ≤ 0.0001; CI  =  confidence interval; SE  =  standard error.