Table 1

Analysis of Sleep Architecture in CFS and Controls, Measured on Night 2 and Adjusted for Medication Use

CFS

NF

n = 35

n = 40

Adjusted Mean*

Adjusted Mean*

P-Value**


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


* Mean values adjusted for medication use (yes/no)

** P-values generated using 2-factor analysis of variance

Reeves et al. BMC Neurology 2006 6:41   doi:10.1186/1471-2377-6-41

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