RT Journal
A1 Jenni OG
T1 HOw much sleep is “normal” in children and adolescents?
JF JAMA Pediatrics
JO JAMA Pediatrics
YR 2013
FD January 1
VO 167
IS 1
SP 91
OP 92
DO 10.1001/jamapediatrics.2013.429
UL http://dx.doi.org/10.1001/jamapediatrics.2013.429
AB 
In this issue, Williams and colleagues5 present the first large-scale, nationally representative sleep duration norms for US children 0 to 18 years of age using sleep duration percentiles as their metric. For this purpose, parents completed 24-hour time diaries on a random weekday and weekend day. The study5 confirms previous data from around the world showing that sleep duration steadily decreases with increasing age, varies significantly from child to child, and is different between weekdays and weekends. Although these kinds of investigations are important because they inform us about the sleep behavior of children within a specific population and identify factors that influence sleep duration, they also point to important gaps in the current research agenda and still leave many questions unanswered, especially for the clinical health care professional.