BMC Public Health

Table 2 Odds ratio for the smoking prevalence from the GEE, with family binomial and logit link, and stratified by sex (EPITeen cohort, 2003, 2007, 2011, 2014)

From: The emergence of socioeconomic inequalities in smoking during adolescence and early adulthood

	Model 1		Model 2
	Higher education¹		Higher educ. x 13 years old ⁽²⁾		Higher educ. x 17 years old ⁽²⁾		Higher educ. x 21 years old ⁽²⁾		Higher educ. x 24 years old ⁽²⁾	Test for interaction
Men
Never smoker	1.63	[1.19;2.24]	1.02	[0.65;1.61]	1.52	[1.00;2.30]	1.04	[0.67;1.62]	1.00	0.12
Experimenter	0.90	[0.70;1.16]	0.83	[0.49;1.38]	0.66	[0.42;1.03]	1.07	[0.68;1.67]	1.00	0.15
Less-than-daily	1.37	[0.91;2.05]	0.17	[0.03;0.97]	0.59	[0.22;1.59]	0.84	[0.34;2.06]	1.00	0.20
Daily smoker	0.62	[0.46;0.82]	NE		0.42	[0.21;0.85]	0.88	[0.59;1.30]	1.00	0.06
Former smoker	1.19	[0.59;2.36]	NE		NE		0.63	[0.14;2.90]	1.00	0.55
Women
Never smoker	1.54	[1.09;2.18]	0.92	[0.62;1.36]	1.48	[1.02;2.14]	0.99	[0.68;1.45]	1.00	0.05
Experimenter	1.00	[0.74;1.34]	0.64	[0.40;1.04]	0.60	[0.38;0.95]	1.08	[0.68;1.71]	1.00	0.03
Less-than-daily	1.42	[0.79;2.57]	NE		0.61	[0.19;1.94]	1.32	[0.43;4.02]	1.00	0.39
Daily smoker	0.49	[0.35;0.69]	0.99	[0.18;5.45]	0.57	[0.30;1.10]	0.84	[0.50;1.39]	1.00	0.40
Former smoker	0.75	[0.39;1.47]	NE		NE		0.36	[0.09;1.50]	1.00	0.16

Legend: Model 1 = Odds ratio for GEE for smoking variables adjusting for ages and education level. Model 2 = Model 1 adding the interactions for age with education. NE = Could not be estimated due to small number of population at risk. ⁽¹⁾ the reference category is lower education. ⁽²⁾ Reference category. 95% confidence intervals in square brackets

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ISSN: 1471-2458

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