Table 2 Smoking and cessation history

currently smoke daily

98 %

median cigarettes per day

10

first cigarette ≤30 min of waking

68 %

mean baseline CO (ppm)

17.5

level indicated abstinence*

23 %

any lifetime quit attempt

80 %

median number of quit attempts

2

median days (CI) of longest abstinence

9 (4, 30)

ever used NRT (if any quit attempt)

52 %

ever used quitline (if any quit attempt)

39 %

past year quit attempt

60 %

past year provider advice to quit

yes

60 %

no

15 %

did not see provider

13 %

no answer

13 %

how confident can stay quit one month (1-10 scale)

6.1