Fig. 2
From: Mortality among male smokers and smokeless tobacco users in the USA
Hazard ratios for specific diseases among men age 40–79 years, according to tobacco status. Legend: a heart diseases, b malignant neoplasms, c chronic lower respiratory diseases, d cerebrovascular diseases, e smoking-related diseases, and f other causes. Squares indicate age 40–59 years. Circles indicate age 60–79 years. Numbers are the point estimates, bold represents statistical significance. Horizontal lines represent 95% confidence interval. Bold numbers represent statistical significance. ST, smokeless tobacco; ref, referent; NE, not estimated; 0 deaths