TABLE 2

PSG Results in Patients and Controls

Patients (n = 53)Controls (n = 20)P
Age, y8.0 ± 4.29.5 ± 4.1.16
Sleep efficiency, %a84.5 ± 9.394.1 ± 7.5<.001
Total sleep time, min348.4 ± 42.8371.8 ± 45.4.05
Wake after sleep onset, minb42.6 ± 39.822.7 ± 26.7.019
Sleep stage N1, %4.8 ± 3.84.4 ± 3.0.681
Sleep stage N2, %34.4 ± 14.333.8 ± 16.2.883
Sleep stage N3, %32.8 ± 14.838.1 ± 17.2.203
NREM sleep total, %b71.2 ± 9.4476.2 ± 4.79.004
Sleep stage REM, %17.3 ± 6.217.9 ± 6.5.734
Sleep stage W (wakefulness), %b10.7 ± 9.65.9 ± 7.5.032
Limb movement index, ha13.0 ± 13.45.6 ± 2.9<.001
  • REM, rapid eye movement.

  • a P < .01.

  • b P < .05.