Table 1 - Descriptive values of lifestyle factors and mental health at baseline for the German and Chinese samples

n

M

SD

n

M

SD

t (df)

p

d

 Body mass index

2981

22.88

3.87

11350

20.49

2.66

39.29 (14461)

< .001

0.65

 Physical activity (range: 0 to 4)

2991

2.24

1.19

12405

2.38

1.05

−6.36 (15394)

< .001

0.10

 Mental activity (range: 0 to 4)

2991

2.72

1.10

12402

3.05

1.09

−14.62 (15391)

< .001

0.24

 Alcohol frequency (range: 0 to 4)

2991

1.43

1.00

12371

0.65

.89

42.12 (15360)

< .001

0.68

 Social rhythm irregularity (range: 10 to 60)

2991

29.58

9.01

12338

26.81

9.33

14.71 (15327)

< .001

0.24

n

%

n

%

χ²

p

d

 Smoking (% yes)

608

20.3

1355

10.9

191.13 (1)

< .001

0.22

 Vegetarian diet (% yes)

482

16.1

2734

22.2

55.45 (1)

< .001

0.12

n

M

SD

n

M

SD

t (df)

p

d

Mental health at baseline

 Positive mental health (range: 0 to 27)

2979

18.13

5.46

12375

19.90

5.21

−16.52 (15352)

< .001

0.27

 Mental health problems (range: 0 to 63)

2624

15.17

10.98

12306

9.50

10.14

25.65 (14928)

< .001

0.42

n

M

SD

n

M

SD

t (df)

p

d

 Positive mental health (range: 0 to 27)

632

18.23

5.58

8920

20.15

5.30

−8.79 (9550)

< .001

0.18

 Mental health problems (range: 0 to 63)

600

14.16

10.53

8834

9.39

10.96

10.32 (9432)

< .001

0.21