4 in 10 Singaporean kids between 6 to 9 years old are sleep deprived, according to study in 2015

"Four of 10 of the children surveyed felt sleepy during the day, which the study said is a sign of sleep deprivation, and nine out of 10 parents did not think their children had sleep problems."

4 in 10 S’porean children aged 6 to 9 are sleep deprived