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. Author manuscript; available in PMC: 2011 Nov 13.

Published in final edited form as: Arch Gen Psychiatry. 2011 Jan 3;68(5):505–515. doi: 10.1001/archgenpsychiatry.2010.193

Table 1.

Demographic and Smoking Characteristics

Characteristic	Mean (SEM) by Treatment
Characteristic	Bupropion	Placebo
Age, y	40.4 (2.8)	42.9 (3.1)
Sex, %
Male	64	75
Female	36	25
Smoking duration, y	20.3 (3.9)	22.5 (3.4)
Quit rates, %	21.4	5.3
Cigarettes per day, No.
Before treatment	24.4 (2.6)^a	22.8 (2.5)^a
After treatment	8.5 (2.5)^a	13.0 (2.8)^a
Change	-15.9 (3.2)	-9.8 (2.1)
Exhaled carbon monoxide
Before treatment	24.5 (3.9)^a	20.3 (2.5)
After treatment	13.8 (3.0)^a	18.7 (2.7)
Change	-10.7 (3.5)^b	-1.6 (1.7)^b
FTND score
Before treatment	6.1 (0.4)^a	6.2 (0.5)^a
After treatment	2.5 (0.6)^a,^b	4.3 (0.6)^a,^b
Change	-3.6 (0.6)^b	-1.9 (0.6)^b

Abbreviations: FTND, Fagerström Test for Nicotine Dependence; SEM, standard error of the mean.

^a

P < .01 within group.

^b

P < .05 between group.