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. Author manuscript; available in PMC: 2017 Feb 1.
Published in final edited form as: Addiction. 2015 Nov 11;111(2):331–339. doi: 10.1111/add.13144

Table 2.

Smoking cessation outcome.

Outcome measure Single contest (n = 602) Multiple contest (n = 615) No counselling (n = 615) Counselling (n= 602) OR Multiple versus Single contest (95% CI) OR Counselling versus No counselling (95% CI)
Primary outcome
Biochemically verified, 30-day PP abstinence rate at 6-month % (n) 11.7 (70) 13.5 (83) 11.6 (71) 13.7 (82) 1.18 (0.84 - 1.66) 1.21 (0.86 - 1.70)
Secondary outcomes
Biochemically verified, 30-day PP abstinence rate at 4-month (end of treatment) % (n) 10.3 (62) 19.3 (119) 14.5 (89) 15.3 (92) 2.09 (1.50 - 2.91) 1.07 (0.78 - 1.46)
Biochemically verified, continuous abstinence rate at 6-months % (n) 3.8 (23) 7.8 (48) 5.7 (35) 6.0 (36) 2.14 (1.28 - 3.56) 1.05 (0.65 - 1.70)

OR = odds ratio; CI = confidence interval; PP = point prevalence.