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. 2010 Nov 24;10:61. doi: 10.1186/1471-2466-10-61

Table 2.

Odds ratio for smoking according to BMI

Variable % OR* 95% CI P
Normal weight 1 ─ < 0.001
Overweight 22.3 0.80 0.55-1.18 0.26
Obese 29.3 1.16 0.67-1.99 0.60
Morbidly obese 31.0 2.18 1.46-3.25 < 0.001

*Odds ratio obtained in a logistic regression model including age, gender, and education level.