Table 1.

Demographic data for the subjects in this study

SmokersNo. of subjectsGender (% male)Race (% white)Mean age (95% CI)Mean weight, lbs (95% CI)Mean cigarettes/d (95% CI)
Study 1114489745.4 (43.5-47.4)177 (170-185)26.0 (24.7-27.3)
Study 2120919458.8 (57.2-60.4)195 (189-202)27.4 (25.2-29.7)
Study 3186526245.9 (40.0-47.9)183 (175-191)24.7 (23.0-26.5)
Pooled (studies 1-3)420628049.5 (48.2-50.7)185 (181-189)25.8 (24.8-26.9)
Smokeless tobacco users
No. of subjects
Gender (% male)
Race (% white)
Mean age (95% CI)
Mean weight, lbs (95% CI)
Mean tins per wk (95% CI)
Study 48010010032.6 (30.9-34.2)215 (206-223)4.1 (3.8-4.5)
Study 5601009832.8 (31.2-34.3)219 (209-229)4.2 (3.6-4.7)
Study 6421009733.6 (31.5-35.8)224 (213-234)4.3 (3.8-4.9)
Pooled (studies 4-6)1821009932.9 (31.9-33.9)218 (213-224)4.2 (3.9-4.4)