Peer substance use overestimation among French university students: a cross-sectional survey

BMC Public Health

Table 4 Adjusted ORs and Confidence intervals for substance use overestimation

Variable	Adjusted OR (95% confidence interval)
	Tobacco	Cannabis	Alcohol	HED
Tobacco use (reference: no use)
Low: < 1/day in the last month	0.68 (0.40 - 1.17)	-	NS	0.64 (0.41 - 0.99)
High: ≥ 1/day in the last month	0.52 (0.30 - 0.89)			0.47 (0.28 - 0.77)
Cannabis use (reference: no use)
Low: ≤ 1/week in the last 12 months	-	1.66 (1.11 - 2.51)	-	-
High: > 1/week in the last 12 months		2.37 (1.23 - 4.73)
Alcohol use (reference: no use)
Low: < 10 days in the last month	-	NS	1.95 (1.31 - 2.92)	-
High: ≥ 10 days in the last month			2.17 (1.10 - 4.23)
HED (reference: no use)
Low: < 4 times in the last month	-	-	-	1.85 (1.19 - 2.89)
High: ≥ 4 times in the last month				2.64 (1.35 - 5.29)
Discipline (reference: sociology)
Foreign language	-	0.78 (0.32 - 1.93)	0.44 (0.13 - 1.43)	0.75 (0.21 - 2.68)
Medicine		0.34 (0.18 - 0.64)	3.72 (2.28 - 6.11)	3.46 (2.12 - 5.70)
Nursing studies		0.35 (0.18 - 0.70)	1.16 (0.72 - 1.85)	1.01 (0.66 - 1.54)
Tobacco use prevalence in class	0.92 (0.89 - 0.94)	-	-	-
Cannabis use prevalence in class	-	0.92 (0.88 - 0.96)	-	-
Alcohol use prevalence in class	-	NS	0.96 (0.93 - 0.99)	1.04 (1.01 - 1.07)
HED prevalence in class	-	-	0.93 (0.87 - 0.99)	0.85 (0.79 - 0.91)
Gender (reference: male)	2.51 (1.56 - 4.02)	NS	-	1.75 (1.17 - 2.64)
Previous questionnaires (reference: no)	-	-	1.56 (1.10 - 2.21)	NS
Cannabis prevention campaigns	1.15 (1.02 - 1.34)	1.11 (1.02 - 1.22)	-	-

A "-" sign indicates that the variable was not included in this model. NS: the variable was included in the model but failed to reach significance at the 5% level. HED: Heavy episodic drinking.

ISSN: 1471-2458