Table 2 Comparison of sleep parameters after one night of extended sleep.

From: Chronotype predicts working memory-dependent regional cerebral oxygenation under conditions of normal sleep and following a single night of sleep extension

 

12-night average

Sleep extension

p value

Hedges’ g

Time in bed (min)

469 ± 51

633 ± 41

< 0.001

3.54

Sleep duration (min)

407 ± 45

549 ± 36

< 0.001

3.48

Wake after sleep onset (min)

59 ± 19

78 ± 40

0.007

0.60

Awakenings (#)

21 ± 5

25 ± 9

0.001

0.54

Sleep efficiency (%)

86 ± 3

87 ± 5

0.29

0.24

Sleep fragmentation index (%)

23 ± 8

21 ± 10

0.27

0.22

Sleepiness rating

5.9 ± 3.2

   

Social jet lag (min)

23 ± 50

   

Midpoint of sleep (median local time)

3:13 a.m. (MSFsc)

2:01 a.m

  
  1. Values are mean ± SD unless otherwise stated.
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