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Table 2 Sleep architecture in CFS and non-fatigued controls – Night 2 adjusted for medication use

From: Perception versus polysomnographic assessment of sleep in CFS and non-fatigued control subjects: results from a population-based study

  CFS
n = 35
NF
n = 40
p-value**
  Adjusted Mean* Adjusted Mean*  
Total sleep time (min) 400.3 407.9 0.52
Sleep period time (min) 453.8 457.8 0.79
Latency to sleep onset (min) 21.3 17.1 0.47
REM latency (min) 98.4 106.8 0.40
Sleep efficiency (%) 88.3 90.2 0.32
Wake after onset (min) 53.8 44.0 0.69
Wake % Sleep Period 11.7 9.8 0.72
# Arousals 105.7 110.2 0.81
Arousal index 15.9 16.3 0.82
Stage 1 (% TST) 9.6 9.5 0.79
Stage 2 (% TST) 48.2 50.8 0.28
Stage 3/4 (% TST) 19.9 17.4 0.20
REM (% TST) 22.3 23.3 0.98
Alpha intrusion 0.29 0.49 0.11
  1. *Mean values adjusted for medication use (yes/no).
  2. ** p-values generated using 2-factor analysis of variance