Smoking and Tobacco Control Monograph No. 7 
Figure 10 
Percentage of current smokers who believe that cigarette smoking is related to emphysema, 
by tar yield^ and history of switching*’: Ages 18 and older. United States, 1987 
100 r 
s6 mg 7-15 mg alBrng Ever Never 
Tar Yield (mg) History of Switching 
* Of current brand. 
“ Ever switched to lower tar/nicotine brands to reduce health risks. 
Source: National Center for Health Statistics, 1987. 
Table 1 
Health concerns and beliefs of current smokers, by tar yield and history of switching^, 
by percent: Ages 17 and older. United States, 1986 
History of 
Tar Yield (mg) Switching 
<6 
7-15 
>16 
Ever 
Never 
Concerned About Health Effects 
84 
79 
68 
85 
70 
Some Brands More Hazardous Than Others 
60 
46 
39 
54 
40 
Their Brand Is Less Hazardous Than Others 
48 
26 
12 
33 
16 
• Ever switched to reduce tar and nicotine. 
Source: Centers for Disease Control, 1986. 
