Table 1 Descriptive statistics for health (risk) and mental health variables (N = 40,986)

Alcohol

Past weekly consumption

40,986 (0.00)

 Non-drinkers

3,764

9.18

8.91 to 9.47

 Low risk (0–14 units)

22,612

55.17

54.69 to 55.65

 Hazardous drinkers (> 14–35/50 units)

13,365

32.61

32.16 to 33.06

 Harmful drinkers (> 35/50 units)

1,245

3.04

2.88 to 3.21

6 or more drinks on one occasion

40,986 (0.00)

 Never

11,187

27.29

26.87 to 27.73

 Monthly or less

17,390

42.43

41.95 to 42.91

 Two to four times a month

8,469

20.66

20.27 to 21.06

 Two to three times a week

3,278

8.00

7.74 to 8.26

 Daily/almost daily

662

1.62

1.50 to 1.74

Diet

Fruit & vegetable intake

40,876 (0.27)

 5 or more servings per day

5,664

13.86

13.52 to 14.19

 3 to 4 servings per day

11,710

28.65

28.21 to 29.09

 2 or less servings per day

23,502

57.50

57.02 to 57.97

Red meat consumption

40,876 (0.27)

 Never

2,184

5.34

5.13 to 5.57

 Less than once a week

10,018

24.51

24.09 to 24.93

 Once a week

14,100

34.49

34.03 to 34.96

 Two or more times a week

14,574

35.65

35.19 to 36.12

Smoking status

40,942 (0.11)

 Non-smoker

37,338

91.20

90.92 to 91.47

 0 to 10 cigarettes a day

2,403

5.87

5.65 to 6.10

 More than 10 cigarettes a day

1,201

2.93

2.77 to 3.10

Physical activity

40,978 (0.02)

 High physical activity

20,731

50.59

50.11 to 51.07

 Moderate physical activity

14,040

34.26

33.80 to 34.72

 Low physical activity

6,207

15.15

14.80 to 15.49

Body mass index (BMI)

40,922 (0.16)

 Underweight > 18.5 kg/m²

138

0.34

0.29 to 0.40

 Normal weight 18.5 to 25 kg/m²

12,719

31.08

30.63 to 31.53

 Overweight 25 to 30 kg/m²

19,042

46.53

46.05 to 47.02

 Obese < 30 kg/m²

9,023

22.05

21.65 to 22.45

Mental health

Depression

40,372 (1.50)

 Probable case

3,958

9.80

9.52 to 10.10

 Non-case

36,414

90.20

89.90 to 90.48

Anxiety

40,372 (1.50)

 Probable case

3,407

8.44

8.17 to 8.71

 Non-case

36,965

91.56

91.29 to 91.83

PTSD

38,517 (6.02)

 Probable case

1,520

3.95

3.76 to 4.15

 Non-case

36,997

96.05

95.85 to 96.24

Job strain^a

40,372 (1.50)

 Low

9,722

24.08

23.67 to 24.50

 High

11,015

27.28

26.85 to 27.72

 Active

11,246

27.86

27.42 to 28.30

 Passive

8,389

20.78

20.39 to 21.18