| National | Sleep Foundation's，NSF | | 3 14 ~ 17 | 4 ~ 11 12 ~ 15 | 1 ~ 2 11 ~14 | 3 ~ 5 10 ~13 | 6 ~ 13 9 ~ 11 | 14 ~ 17 8 ~ 10 | 18 ~ 64 7 ~ 9 | 65 7 ~8 | | |