Validation of the illustrated questionnaire on eating and sedentary behaviors (QUICAS) for seven to ten-year-old children

The Illustrated Questionnaire on Eating and Sedentary Behaviors (QUICAS) was developed and validated for schoolchildren seven to ten years old. It used previous day recall and was illustrated with ten eating behaviors (referring to the act of eating without distractions, with company, on a regular basis, the type of food eaten, and participation in tasks involved in meal preparation) and five sedentary behaviors (related to the use of television, computer, tablet, cell phone, and video game). The instrument was validated in four stages: (1) Its content was developed based on literature review and expert evaluation; (2) Items were validated by comparing the responses of children and their parents, through a questionnaire on Google Forms. At this stage, a convenience sample was adopted, consisting of 145 parent-child dyads. High sensitivity (average of 90.7%); high specificity (mean of 87.9%); low number of false positives (mean of 12.1%); low number of false negatives (mean of 9.3%); almost perfect agreement between the child's and the parent's reports (k = 0.81); and low disagreement (≤22%) were found. In addition, the child's gender and age did not significantly influence the child's report. (3) The illustrations were validated in a focus group with 18 children, who satisfactorily described all the eating and sedentary behaviors of the illustrations. (4) In the pretest of the questionnaire on Google Forms, with the participation of 15 children, the majority (86.7%) judged the questionnaire as excellent or good. Therefore, the QUICAS is valid to assess eating and sedentary behaviors in schoolchildren seven to ten years old.