Passive smoking and atherosclerosis - IESC/UFRJ

Stratification by age, adjusting for race and gender, is shown in Figure 3.
Figure 3. Race and gender-adjusted wall (intima + media)
thickness of the carotid arteries (IMT): Percentiles § by age
and smoking in the Atherosclerosis Risk in Communities (ARIC)
study at baseline (1987-89).
§ In the “box-whisker” plots, the bottom whisker provides the 10 th percentile; the bottom of the
box, the 25 th percentile; the horizontal line in the box, the 50 th percentile (median); the top of the
box, the 75 th percentile; and the top of the whisker, the 90 th percentile.
N=nonsmokers
E=exposed to environmental tobacco smoking
P=past smokers
C=current smokers
(11) What is the assumption underlying the presentation of data simultaneously
adjusted for race and gender? Are the findings in Figure 3 consistent with those
in table 1?
E8-6