. 2019 Jan 31;110(2):236–243. doi: 10.17269/s41997-019-00178-4

Table 2.

Multilevel model results of the association between school tobacco policy scores using the School Tobacco Policy Index (STPI) and student smoking behaviours, 2015–2016 COMPASS study

	Adjusted odds ratio^a (95% CI)
	Model 1: susceptibility to future smoking	Model 2: ever tried smoking	Model 3: current smoking	Model 4: perceived supportive environment
Four-unit increase in school board tobacco policy score on the STPI^b	1.02 (1.00, 1.05)	1.00 (0.98, 1.03)	1.00 (0.97, 1.03)	1.01 (0.99, 1.03)
Four-unit increase in school tobacco policy score on the STPI	0.98 (0.96, 1.01)	1.00 (0.97, 1.03)	0.95 (0.91, 0.99)*	1.06 (1.04, 1.08)**

^aAll models controlled for student-level clustering within schools, school location (urban/rural), and self-reported student gender, grade, ethnicity, and number of friends who smoke cigarettes

^bSchool board model included data from 15 school boards

*p < 0.05; **p < 0.001