Table 4. Open in new tab The association...

	Null model	Model 1 (crude)	Model 2	Model 3	Model 4	Model 5
Gender (ref = woman)		1.65*	1.09	2.50	1.65*	1.09	2.49	1.70*	1.09	2.63	1.66*	1.11	2.48	1.69*	1.11	2.59
Higher education preparatory (HEP)		ref			ref			ref			ref			ref
Vocational (VP)		1.82*	1.09	3.04	1.97*	1.16	3.34	1.75*	1.05	2.91	1.35	0.82	2.22	1.48	0.89	2.47
Introduction (IP)		2.45*	1.28	4.66	2.66*	1.42	4.98	2.01*	1.01	3.98	1.80*	1.02	3.19	1.78	0.98	3.24
Socioeconomic status (ref = at least one parent studied at university/college)					0.75	0.50	1.13							0.72	0.48	1.08
Truancy (ref = no)								2.17*	1.38	3.42				1.59*	1.02	2.49
School dissatisfaction (ref = satisfied)								1.55*	1.01	2.37				1.37	0.90	2.09
Substance onset < 14 years old (ref = no)											7.16*	5.01	10.24	6.55*	4.53	9.48
var(_cons)	0.89	0.84	0.48	1.48	0.83	0.46	1.46	0.76	0.43	1.35	0.62	0.32	1.20	0.56	0.28	1.14
Model fitness
df	2	5			6			7			6			9
AIC	1108.1	1096.107		1096.245		1082.193		997.5929		994.3198
BIC	1121.126	1128.673		1135.324		1127.786		1036.672		1052.938

Null model

Model 1 (crude)

Model 2

Model 3

Model 4

Model 5

n = 4980

IRR

95% CI

IRR

95% CI

IRR

95% CI

IRR

95% CI

IRR

95% CI

Gender (ref = woman)

1.65*

1.09

2.50

1.65*

1.09

2.49

1.70*

1.09

2.63

1.66*

1.11

2.48

1.69*

1.11

2.59

Higher education preparatory (HEP)

ref

Vocational (VP)

1.82*

1.09

3.04

1.97*

1.16

3.34

1.75*

1.05

2.91

1.35

0.82

2.22

1.48

0.89

2.47

Introduction (IP)

2.45*

1.28

4.66

2.66*

1.42

4.98

2.01*

1.01

3.98

1.80*

1.02

3.19

1.78

0.98

3.24

Socioeconomic status (ref = at least one parent studied at university/college)

0.75

0.50

1.13

0.72

0.48

1.08

Truancy (ref = no)

2.17*

1.38

3.42

1.59*

1.02

2.49

School dissatisfaction (ref = satisfied)

1.55*

1.01

2.37

1.37

0.90

2.09

Substance onset < 14 years old (ref = no)

7.16*

5.01

10.24

6.55*

4.53

9.48

var(_cons)

0.89

0.84

0.48

1.48

0.83

0.46

1.46

0.76

0.43

1.35

0.62

0.32

1.20

0.56

0.28

1.14

Model fitness

AIC

1108.1

1096.107

1096.245

1082.193

997.5929

994.3198

BIC

1121.126

1128.673

1135.324

1127.786

1036.672

1052.938

	Null model	Model 1 (crude)	Model 2	Model 3	Model 4	Model 5
Gender (ref = woman)		1.65*	1.09	2.50	1.65*	1.09	2.49	1.70*	1.09	2.63	1.66*	1.11	2.48	1.69*	1.11	2.59
Higher education preparatory (HEP)		ref			ref			ref			ref			ref
Vocational (VP)		1.82*	1.09	3.04	1.97*	1.16	3.34	1.75*	1.05	2.91	1.35	0.82	2.22	1.48	0.89	2.47
Introduction (IP)		2.45*	1.28	4.66	2.66*	1.42	4.98	2.01*	1.01	3.98	1.80*	1.02	3.19	1.78	0.98	3.24
Socioeconomic status (ref = at least one parent studied at university/college)					0.75	0.50	1.13							0.72	0.48	1.08
Truancy (ref = no)								2.17*	1.38	3.42				1.59*	1.02	2.49
School dissatisfaction (ref = satisfied)								1.55*	1.01	2.37				1.37	0.90	2.09
Substance onset < 14 years old (ref = no)											7.16*	5.01	10.24	6.55*	4.53	9.48
var(_cons)	0.89	0.84	0.48	1.48	0.83	0.46	1.46	0.76	0.43	1.35	0.62	0.32	1.20	0.56	0.28	1.14
Model fitness
df	2	5			6			7			6			9
AIC	1108.1	1096.107		1096.245		1082.193		997.5929		994.3198
BIC	1121.126	1128.673		1135.324		1127.786		1036.672		1052.938

Table 4.

Open in new tab

The association of academic orientation with frequent (21+ times) cannabis use (multi-level mixed-effects Poisson regression with robust standard errors, including a random intercept for school class level)

	Null model	Model 1 (crude)			Model 2			Model 3			Model 4			Model 5
n = 4980		IRR	95% CI		IRR	95% CI		IRR	95% CI		IRR	95% CI		IRR	95% CI
Gender (ref = woman)		1.65*	1.09	2.50	1.65*	1.09	2.49	1.70*	1.09	2.63	1.66*	1.11	2.48	1.69*	1.11	2.59
Higher education preparatory (HEP)		ref			ref			ref			ref			ref
Vocational (VP)		1.82*	1.09	3.04	1.97*	1.16	3.34	1.75*	1.05	2.91	1.35	0.82	2.22	1.48	0.89	2.47
Introduction (IP)		2.45*	1.28	4.66	2.66*	1.42	4.98	2.01*	1.01	3.98	1.80*	1.02	3.19	1.78	0.98	3.24
Socioeconomic status (ref = at least one parent studied at university/college)					0.75	0.50	1.13							0.72	0.48	1.08
Truancy (ref = no)								2.17*	1.38	3.42				1.59*	1.02	2.49
School dissatisfaction (ref = satisfied)								1.55*	1.01	2.37				1.37	0.90	2.09
Substance onset < 14 years old (ref = no)											7.16*	5.01	10.24	6.55*	4.53	9.48
var(_cons)	0.89	0.84	0.48	1.48	0.83	0.46	1.46	0.76	0.43	1.35	0.62	0.32	1.20	0.56	0.28	1.14
Model fitness
df	2	5			6			7			6			9
AIC	1108.1	1096.107			1096.245			1082.193			997.5929			994.3198
BIC	1121.126	1128.673			1135.324			1127.786			1036.672			1052.938

	Null model	Model 1 (crude)			Model 2			Model 3			Model 4			Model 5
n = 4980		IRR	95% CI		IRR	95% CI		IRR	95% CI		IRR	95% CI		IRR	95% CI
Gender (ref = woman)		1.65*	1.09	2.50	1.65*	1.09	2.49	1.70*	1.09	2.63	1.66*	1.11	2.48	1.69*	1.11	2.59
Higher education preparatory (HEP)		ref			ref			ref			ref			ref
Vocational (VP)		1.82*	1.09	3.04	1.97*	1.16	3.34	1.75*	1.05	2.91	1.35	0.82	2.22	1.48	0.89	2.47
Introduction (IP)		2.45*	1.28	4.66	2.66*	1.42	4.98	2.01*	1.01	3.98	1.80*	1.02	3.19	1.78	0.98	3.24
Socioeconomic status (ref = at least one parent studied at university/college)					0.75	0.50	1.13							0.72	0.48	1.08
Truancy (ref = no)								2.17*	1.38	3.42				1.59*	1.02	2.49
School dissatisfaction (ref = satisfied)								1.55*	1.01	2.37				1.37	0.90	2.09
Substance onset < 14 years old (ref = no)											7.16*	5.01	10.24	6.55*	4.53	9.48
var(_cons)	0.89	0.84	0.48	1.48	0.83	0.46	1.46	0.76	0.43	1.35	0.62	0.32	1.20	0.56	0.28	1.14
Model fitness
df	2	5			6			7			6			9
AIC	1108.1	1096.107			1096.245			1082.193			997.5929			994.3198
BIC	1121.126	1128.673			1135.324			1127.786			1036.672			1052.938

P < 0.05.

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