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. 2006 Jul;21(7):753–757. doi: 10.1111/j.1525-1497.2006.00504.x

Table 1.

Background Characteristics of Participants Who Set a Quit Date (n = 309)

Mean (SD) n (%)
Age 40.48 (8.37)
Gender (% male) 160 (51.8%)
Race (% white) 243 (78.6%)
Years smoking 24.37 (9.69)
Fagerstrom FTND 6.73 (2.19)
Cigarettes/day at baseline 26.62 (12.17)

FTND, Fagerstrom test of nicotine dependence.