Socio-economic status
HOLIDAYS
SES moderated differences in the rate of change in %BF and zBMI. Overall, children from lower SES families showed greater increases in fatness over the holidays compared to children from higher SES families. Every 1 SD increase in SES was associated with a 7.5%BF/year greater difference in the rate of change during the in-school period in Grade 4 compared to the holidays (p = 0.045), and a 9.4%BF/year greater difference for Grade 5. Similarly, a 1 SD increase in SES was associated with a 0.9 SD/year greater relative difference in rates of change in zBMI in Grade 5 vs. the holidays (p = 0.040), although the relative difference of + 0.7 SD/year was not significant for Grade 4. Socio-economic status did not moderate differences in the rates of change of Waist:Ht%, SBJ, or V̇O