TABLE 3.

Polysomnographic Characteristics in 44 Children With Significant Symptoms of ADHD, 27 Children With Mild Symptoms of ADHD, and 39 Control Children

Significant ADHD Symptoms (n = 44)Mild ADHD Symptoms (n = 27)Control (n = 39)
Sleep efficiency (%)89.7 ± 10.088.4 ± 8.489.4 ± 6.5
Sleep latency (min)27.8 ± 30.932.9 ± 30.928.8 ± 29.5
REM latency (min)172.6 ± 86.2*132.1 ± 63.5121.1 ± 42.9
No. of awakenings3.8 ± 3.53.9 ± 3.54.0 ± 3.1
SWS (%TST)21.6 ± 8.521.2 ± 3.722.2 ± 5.2
REM (%TST)20.9 ± 7.3*25.6 ± 8.126.1 ± 6.7
Spontaneous arousal index8.8 ± 3.88.6 ± 4.69.1 ± 4.0
Respiratory arousal index1.4 ± 2.81.9 ± 4.00.9 ± 1.5
PLM index with arousal (/h TST)0.1 ± 0.40.1 ± 0.20.1 ± 0.3
PLM index in sleep (/h TST)1.9 ± 3.42.1 ± 4.81.8 ± 2.9
PLM index total (/h TST)2.0 ± 3.52.2 ± 4.91.9 ± 3.1
AHI (/h TST)1.5 ± 1.92.4 ± 2.51.3 ± 1.7
AI (/h TST)0.7 ± 0.70.9 ± 1.10.8 ± 0.6
Mean Spo297.4 ± 1.197.9 ± 0.797.6 ± 0.8
Spo2 nadir91.1 ± 5.190.9 ± 5.892.4 ± 3.6
  • SWS indicates slow wave sleep.

  • * P ≤ .01 versus controls.

  • P < .02 significant symptoms versus mild symptoms.