[Relationship between dietary risk factors and sedentary recreational screen time among school-age children in grades 4-6 in Baise City from 2018 to 2019].

OBJECTIVE

To explore the relationship between dietary risk factors and sedentary recreational screen time of adolescents.

METHODS

A total of 6363 pupils of Grades 4-6 from 6 primary schools in Baise were recruited with cluster-sampling method from Sep.2018 to Nov.2019. Participants were asked to report the average duration of watching television, digital devices use, intakes of sugar-sweetened beverage(SSB), snacks, fast-food, soymilk/milk product, skipping breakfast, and frequency of fruit/vegetable. We performed multivariable logistic regression to estimate OR and 95%CI for the relations between duration of sedentary recreational screen time and dietary risk factors, accounting for complex survey sampling and adjusting for potential confounders.

RESULTS

(1)Both prolonged watching television and leisure-time digital devices use were associated with high intakes of SSBs, snacks, and low intakes of fruits and vegetables. And compared with <2 h/d, two kinds of screen-time(>4 h/d) was associated with significantly higher odds for intakes of fast food(watching television: OR=2.551;leisure-time digital devices use: OR=3.024), and frequent breakfast skipping(watching television: OR=1.646;leisure-time digital devices use: OR=1.674). (2)Compared with the reference groups(<2 h/d), participants spending more time per day on sedentary recreational screen time were more likely to drink sugar-sweetened beverages(OR=1.717-3.272), consume snacks(OR=1.626-3.154)and less likely to consume fruit/vegetable(OR=1.526-2.251). Compared to ≤2 h/d, estimated ORs of high intakes of fast food were 2.118 for>3 h/d of screen time, and 2.357 for >4 h/d.

CONCLUSION

Increased television viewing and digital devices use in adolescence of Grades 4-6 is associated with higher odds of consumption of sweetened beverages, snacks and lower odds of fruit consumption in Baise.