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. Author manuscript; available in PMC: 2016 Jul 11.
Published in final edited form as: J Pediatr Health Care. 2009 May 21;24(2):108–115. doi: 10.1016/j.pedhc.2009.03.002

TABLE 3.

Significant explanatory variables in logistic regression of exposure to environmental tobacco smoke

Explanatory variable Regression coefficient Probability Odds ratio Odds ratio, 95% confidence interval
Mother’s post-secondary education (no vs. yes) 0.4423 <.0001 2.422 (1.692, 3.466)
Child age (y) 0.1467 <.0001 1.158 (1.113, 1.205)
Sex (female vs. male) −0.0237 0.7928 0.954 (0.669, 1.359)