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Table 2 Overview of the study sample from the Ungdata-survey of 2013 which was used in this study (students in upper secondary school without missing data for sex, school year or their family’s socioeconomic status, n = 6238)

From: Anxiety and depression symptoms and alcohol use among adolescents - a cross sectional study of Norwegian secondary school students

 

Boys

n = 3111

Girls

n = 3127

Total

n = 6238

n

%

n

%

n

%

Depression symptoms (range 1–4), mean (SD)

1.8 (0.7)

2.3 (0.8)

2.1 (0.8)

 I. quartile (boys 1.00–1.33, girls 1.00–1.67)

961

31

789

25

1750

28

 II. quartile (boys 1.40–1.67, girls 1.75–2.33)

577

19

958

31

1535

25

 III. quartile (boys 1.75–2.17, girls 2.40–2.83)

764

25

616

20

1380

22

 IV. quartile (boys 2.20–4.00, girls 3.00–4.00)

704

23

692

22

1396

22

 Missing

105

3

72

2

177

3

Anxiety symptoms (range 1–4), mean (SD)

1.3 (0.5)

1.7 (0.7)

1.5 (0.7)

 I. quartile (boys 1.00–1.00, girls 1.00–1.00)

1521

49

763

24

2284

37

 II. quartile (boys 1.00–1.00, girls 1.25–1.50)

952

30

952

15

 III. quartile (boys 1.25–1.50, girls 1.66–2.00)

878

28

571

18

1449

23

 IV. quartile (boys 1.66–4.00, girls 2.25–4.00)

531

17

732

23

1263

20

 Missing

181

6

109

3

290

5

Onset of alcohol consumption before the age of 15 years

 Yes

954

31

884

28

1838

29

 No

1755

56

1946

62

3701

59

 Missing

402

13

297

10

699

11

Consumes alcohol at least 1–3 times each month

 Yes

849

27

885

28

1734

28

 No

2185

70

2199

70

4384

70

 Missing

77

2

43

1

120

2

Been intoxicated at least five times over the past six months

 Yes

620

20

609

19

1229

20

 No

2404

77

2470

79

4874

78

 Missing

87

3

48

2

135

2

Year of upper secondary school

      

 1st year (11th year of schooling/age 15–17)

2231

72

2179

70

4410

71

 2nd year (12th year of schooling/age 16–18)

880

28

948

30

1828

29

Has your family’s economy been good or bad over the previous two years?

 It has been good the entire time

1384

44

1174

38

2558

41

 It has been good most of the time

984

32

1035

33

2019

32

 It has neither been good nor bad

555

18

694

22

1249

20

 It has been bad most of the time

142

5

181

6

323

5

 It has been bad the entire time

46

1

43

1

89

1