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Table 4 Descriptive information regarding predictors and outcomes before COVID-19 (Time 1) and during COVID-19 (Time 2)

From: Pre-pandemic sleep behavior and adolescents’ stress during Covid-19: a prospective longitudinal study

 

Time 1

Time 2

 

Mean

SD

95% Confidence Interval

Mean

SD

95% Confidence Interval

Lower Bound

Upper Bound

Lower Bound

Upper Bound

Predictors

 Sleep duration

  Girl

9.12

1.32

8.74

9.50

10.00

1.58

9.56

10.45

  Boy

9.10

1.79

8.18

10.02

10.13

0.93

9.65

10.61

  Total

9.12

1.44

8.76

9.47

10.03

1.44

9.69

10.38

 Sleep quality

  Girl

1.25

0.79

1.02

1.48

0.99

0.77

0.78

1.21

  Boy

1.00

0.63

0.66

1.34

0.93

0.56

0.65

1.22

  Total

1.19

0.75

1.00

1.38

0.98

0.72

0.80

1.15

 Daytime sleepiness (MPESS)

  Girl

7.84

3.56

6.84

8.84

5.20

2.59

4.47

5.93

  Boy

6.76

4.05

4.68

8.85

5.28

3.83

3.31

7.25

  Total

7.57

3.69

6.68

8.47

5.22

2.91

4.52

5.93

 Behavioral arousal

  Girl

2.86

1.14

2.54

3.18

3.06

1.25

2.70

3.41

  Boy

2.92

1.30

2.25

3.59

3.43

1.17

2.83

4.03

  Total

2.88

1.17

2.59

3.16

3.15

1.24

2.85

3.45

 Cognitive emotional arousal

  Girl

3.69

1.01

3.41

3.98

4.27

0.88

4.03

4.52

  Boy

4.65

0.68

4.30

4.99

4.60

0.73

4.23

4.98

  Total

3.93

1.02

3.69

4.18

4.36

0.85

4.15

4.56

Outcome

 Perceived stress

  Girl

NA

   

18.45

6.20

16.70

20.19

  Boy

NA

   

15.54

5.53

12.70

18.38

  Total

NA

   

17.72

6.13

16.24

19.21

  1. N = 63