FIGURE 2
Error-bar graph showing probability of chronic bronchitis in Aboriginal people (≥ 15 years) by sex and body mass index, 2006, Canada
BMI was introduced as a continuous variable in the multivariate model, and was afterwards categorized for a schematic depiction. A significant interaction was found between sex and BMI. In all the three categories of BMI (healthy and underweight, overweight, and obese), the probability of CB was significantly higher in females than males. However, this difference was notably greater in obese people.