Table 4 Mean differences and effect sizes for the sleep-wake patterns according to concordance between perceived family and individual chronotype for morning and evening types subjects.

From: Mismatch between perceived family and individual chronotype and their association with sleep-wake patterns

 

Match (n = 170)

No match (n = 273)

t

Effect size Cohen’s d

M

SD

M

SD

Diurnal subjective somnolence

10.85

4.24

9.88

4.43

2.27*

0.10

HNS during weekdays

5.45

1.58

5.60

1.35

1.09

0.05

HNS during weekends

8.79

2.39

8.56

2.17

1.03

0.04

CSM Factors

Morningness

16.26

3.05

19.58

3.64

9.90**

0.42

Activity planning

11.85

2.26

13.25

3.01

5.22**

0.24

Morning alertness

7.46

1.96

8.86

2.03

7.14**

0.32

  1. Note: *p < 0.05; **p < 0.01; M = mean; SD: standard deviation. CSM: Composite scale of morningness. HNS: Hours of nocturnal sleep.
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