Table 3 Characteristics of the group of participants.

From: Differential impact in young and older individuals of blue-enriched white light on circadian physiology and alertness during sustained wakefulness

 

YOUNG Mean (SE)

OLDER Mean (SE)

p

N (m, f)

26 (15,11)

12 (9,3)

 

Age (year)

24.96 (0.58)

63.58 (1.27)

<0.0001

Sleep time (h: min)

23:23 (00:06)

23:10 (00:09)

0.2419

Wake time (h: min)

07:23 (00:06)

07:10 (00:09)

0.2419

BDI

2 (0.44)

1.83 (0.56)

0.8261

ESS

5.37 (0.60)

4.23 (0.66)

0.2559

MEQ

54.34 (1.37)

63.42 (3.13)

0.0037

MCTQ

4.71 (0.16)

2.86 (0.44)

<0.0001

PSQI

3.32 (0.31)

3 (0.46)

0.5635

BMI (kg/m2)

22.19 (0.49)

25.32 (0.73)

0.0010

  1. BDI: Beck Depression Inventory; ESS: Epworth Sleepiness Scale; MEQ: Horne & Ostberg morningness eveningness Questionnaire; MCTQ: Munich Chronotype Questionnaire; PSQI: Pittsburgh Sleep Quality Index; BMI: Body Mass Index.
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