2 - 4 years

(n = 17)

5 - 12 years

(n = 149)

13 - 18 years

(n = 86)

M (SD)

M (SD)

M (SD)

Sleep Duration (hours)

8.32 (1.32)

8.14 (1.68)

7.28 (1.54)

Sleep Latency (minutes)

63.68 (57.32)

50.49 (46.40)

57.54 (74.13)

Night Wakings (number per night)

.68 (.90)

1.02 (1.81)

1.13 (1.20)

Nightmares (number per week)

0.62 (0.77)

0.73 (2.00)

1.94 (5.66)