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Table 3 Abstinence rates during intervention and follow-up phases

From: Supporting smoking cessation in chronic obstructive pulmonary disease with behavioral intervention: a randomized controlled trial

Month

Continuous abstinence

P

Intervention group

Control group

(n = 1377)

(n = 1230)

6

79(5.7%)

3(0.2%)

<0.001

12

198(14.4%)

11(0.9%)

<0.001

18

342(24.8%)

24(2.0%)

<0.001

24

508(36.9%)

36(2.9%)

<0.001

30

639(46.4%)

42(3.4%)

<0.001

36

630(45.8%)

49(4.0%)

<0.001

42

622(45.2%)

57(4.6%)

<0.001

48

610(44.3%)

63(5.1%)

<0.001

  1. No cigarettes from month 6 onwards.