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. 2021 Mar 16;23(7):1113–1122. doi: 10.1093/ntr/ntab005

Table 3.

Participants’ Traditional Cigarette Consumption at Baseline and at 12 and 24 Weeks

Time point N Obs Variable Mean SD Median
Baseline (visit 1) 40 CPD 27.95 9.14 25.00
CO 34.03 10.95 30.00
Baseline (visit 1) 37 CPD 28.59 9.79 25.00
Participants who completed the study CO 33.23 10.97 30.00
Week 12 (visit 4) 37 CPD 6.38 6.89 6.00
CO 8.19 6.53 10.00
Week 24 (visit 5) 37 CPD 6.91 6.77 7.00
CO 9.29 8.61 10.00

CO = exhaled carbon monoxide; CPD = cigarettes daily.