Table 4 Smoking cessation monitoring according to group assignment*

Baseline (Week 0)

Breath CO (ppm)

7.61 ± 3.61

5.93 ± 2.83

0.020

FTND

5.43 ± 1.96

4.32 ± 2.26

0.017

WSWS

53.09 ± 10.69

56.00 ± 12.42

0.246

End of 3 ^rd month post quit date (Week 12)

Breath CO (ppm)

7.30 ± 2.99

1.98 ± 1.25

< 0.001

FTND

4.87 ± 2.10

0.15 ± 0.53

< 0.001

WSWS

51.39 ± 9.81

47.95 ± 10.70

0.123

End of 6 ^th month post quit date (Week 24)

Breath CO (ppm)

8.00 ± 3.58

1.83 ± 2.47

< 0.001

FTND

4.57 ± 1.70

0.25 ± 0.71

< 0.001

WSWS

51.87 ± 9.43

48.20 ± 9.14

0.072

Negative cotinine test (0-10 ng/mL), n (%)

8 (17.4%)

31 (77.5%)

< 0.001^‡