Table 2 Baseline characteristics at age 17 and 20

Sexual Minority Youth

n = 1297 Missing: 9 (0.69%)

17

11.3% (147)

92.8%

605

7.2%

47

84.5%

545

15.5%

100

20

19.4% (228)

88.1%

512

11.9%

69

73.3%

437

26.7%

159

Socio-economic status (ISEI)

Range: 16–90, n = 1232, Missing: 65 (5%)

17

46.43 (19.43)

46.48

19.95

56.09

16.09

44.56

18.57

51.45

20.21

20

47.13 (19.69)

46.66

19.94

57.18

18.99

43.92

18.97

52.90

18.59

Parental migration background

both parents born abroad), n = 1267, Missing: 30 (2.3%)

17

48.3% (612)

48.2%

284

28.3%

13

53.4%

285

30.6%

30

20

47.7% (550)

49.2%

246

34.3%

23

55.0%

238

28.1%

43

Higher education level

n = 1268, Missing: 29 (2.2%)

17

65.6% (832)

60.3%

359

73.9%

34

66.9%

355

87.5%

84

20

68.0% (781)

62.2%

313

77.9%

53

66.4%

283

86.8%

132

Sensation-seeking

Range: 0–1 (composite score), n = 1130, Missing: 167 (12.9%)

17

0.57 (0.25)

0.68

0.22

0.60

0.21

0.47

0.22

0.46

0.27

20

0.57 (0.25)

0.67

0.22

0.64

0.24

0.46

0.22

0.47

0.25

Low self-control

Range: 1(fully untrue)-4(fully true), 10 Items, Cronbach’s Alpha = 0.73, n = 1239, Missing: 58 (4.5%)

17

2.21 (0.43)

2.29

0.42

2.06

0.48

2.14

0.42

2.26

0.38

20

2.07 (0.42)

2.14

0.44

2.03

0.42

2.01

0.40

2.00

0.39

Internalizing symptoms

Range: 1(never)-5(very often), 9 Items, Cronbach’s Alpha = 0.85, n = 1281, Missing: 16 (1.2%)

17

2.28 (0.75)

1.95

0.58

2.39

0.71

2.51

0.73

2.94

0.81

20

2.21 (0.76)

1.96

0.64

2.31

0.71

2.34

0.78

2.64

0.79

Bullying victimization

Range: 1(never)-6((almost) daily), 4 Items, Cronbach’s Alpha = 0.69, n = 1289, Missing: 8 (0.6%)

17

1.45 (0.57)

1.45

0.59

1.75

0.67

1.40

0.52

1.54

0.63

20

1.37 (0.47)

1.36

0.45

1.63

0.61

1.31

0.44

1.46

0.52

Leisure activities

Range: 1(never)-6((almost) daily), 31 Items, Cronbach’s Alpha = 0.78, n = 1152, Missing: 145 (11.2%)

17

2.23 (0.43)

2.29

0.44

2.10

0.47

2.17

0.42

2.26

0.41

20

2.21 (0.43)

2.26

0.46

2.24

0.44

2.14

0.41

2.19

0.41

Exposure to friends’ substance use

without alcohol and tobacco, 1 = yes, n = 1206, Missing: 91 (7.0%)

17

59.9% (772)

62.9%

342

64.3%

27

52.5%

275

81.3%

78

20

63.4% (712)

65.5%

313

83.1%

54

51.6%

220

81.2%

125

Self-reported subjective stress

Range: 1(never)-5(very often), 4 Items, Cronbach’s Alpha = 0.85, n = 1177, Missing: 0

17

n/a

n/a

n/a

n/a

n/a

20

2.82 (0.93)

2.56

0.85

3.04

0.89

2.93

0.94

3.25

0.94