0124 The influence of the family environment on children’s sleep during the school year and summer

Abstract Introduction More than a third of US children do not receive adequate sleep. Earlier bedtimes, consistent bedtime routines, and good sleep hygiene help to support more Our previous work has shown that during summer, 5-8-year-old go bed later obtain less compared the school year. We hypothesized year-summer differences in family environment would explain children’s timing these periods. Methods During year 119 parents 5–8-year-olds completed measures child temperament, hygiene, parenting practices, parent stress social support. Child was measured for 8 days using wrist actigraphs. Sleep onset offset were determined Sadeh algorithm diaries determine midpoint. Paired samples t-tests examined variables stepwise linear regression analyses used examine effect on midpoint, controlling age, gender, chronotype, duration. Results Compared year, summer reported parent-child conflict before (t(117)=3.913, p<.001), routines (t(117)=4.808, average daily screen use (t(117)=-2.756, p=.007) greater surgency or impulsivity (t(108)=-2.960, p=.004. Overall, our model explained 48% variance (p=<.001) 45% (p=<.001). In final model, caffeine intake (β=2.1, p=.033), chronotype (β=0.4, p=<.001) effortful control self-regulatory skills (β=0.2, p=.047) predicted having midpoint (β=0.3, p=.002) (β=-0.2, p=.022). Conclusion The relaxed nature likely contributes decreased over bedtime, increased media use, routine consistency. However, only decreases consistency contributed bedtimes summer. Worryingly, 5-8-year-olds appear be contributing timing. Addressing school-year are important targets intervention improve Support (if any) Texas Children's Pediatric Pilot Award