Azam Doustmohammadian, Nasrin Omidvar, Elham Shakibazadeh
School-based interventions for promoting food and nutrition literacy (FNLIT) in elementary school children: a systematic review protocol
Systematic reviews
purpose healthy sleep vital childrens wellbeing assessing sleep efficiently accurately help understand childrens lifestyles due difficulty objectively measuring sleep duration using wearable sensors largescale surveys children selfadministered questionnaires often used japan however accuracy uncertain evaluated compared accuracy questionnairebased sleep times wearable sensors methods observational study conducted november 2019 january 2020 selfadministered questionnaire lifestyle habits actigraph gt3x actigraph inc pensacola usa accelerometer data collected 40 fourthgrade elementary school students kagawa prefecture japan analyzed measurements 256 days 280 days 40 persons 7 days excluding days rate wearing accelerometer 90 results median sleep duration per accelerometry 453 minutes median time bed 519 minutes questionnairebased time bed 11 minutes longer relatively high interindividual variability difference bedtime 26 minutes earlier wakeup time 12 minutes earlier questionnaire average sleep efficiency 874 onethird children sleep efficiency 85 conclusion difference sleep duration questionnaire compared accelerometry approximately 10 minutes suggesting questionnaire may determine sleep duration accuracy