This study assessed the sleep patterns, sleep disruptions, and sleepiness o
f school-age children. Sleep patterns of 140 children (72 boys and 68 girls
; 2nd-, 4th-, and 6th-grade students) were evaluated with activity monitors
(actigraphs). in addition, the children and their parents completed comple
mentary sleep questionnaires and daily reports. The findings reflected sign
ificant age differences, indicating that older children have more delayed s
leep onset times and increased reported daytime sleepiness. Girls were foun
d to spend more time in sleep and to have an increased percentage of motion
less sleep. Fragmented sleep was found in 18% of the children. No age diffe
rences were found in any of the sleep quality measures. Scores on objective
sleep measures were associated with subjective reports of sleepiness. Fami
ly stress, parental age, and parental education were related to the child's
sleep-wake measures.