2.7. Statistical Methods
A comprehensive statistical analysis was conducted to evaluate differences in food group intakes between the PG and the CG. The average daily food group intakes during the week (outside and inside the kindergarten) were compared to the average daily food group intakes during the weekend (outside of kindergarten). The total food group intakes per weekday and weekend were also compared to the RDFI. The same comparisons were made separately for the PG and the CG. In addition, a comparison of the quantities of food groups served in kindergartens between the PG and CG was made regarding the amount of leftovers (the difference between food served and consumed).The Welch two-sample 