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Table 3 Smoking abstinence by group and cigarette consumption

From: Combining varenicline and nicotine patches: a randomized controlled trial study in smoking cessation

Group Smokers   ≤29 cigarettes/day Smokers > 29 cigarettes/day
Continuous abstinence Abstainers/N (%) Crude OR (95% CI) ORa(95% CI) Abstainers/N (%) Crude OR (95% CI) ORa(95% CI)
Weeks 2 to 8       
Varenicline + nicotine patch 38/78 (48.7%) 1.05 (0.7 to 1.4) 1.0 (0.5 to 1.3) 34/92 (36.9%) 1.13 (0.7 to 1.6) 1.07 (0.6 to 1.8)
Varenicline + placebo 39/84 (46.4%) 1 1 29/87 (33.3%) 1 1
Weeks 2 to 12       
Varenicline + nicotine patch 35/78 (43.6%) 1.14 (0.7 to 1.6) 1.0 (0.5 to 1.8) 31/92 (34.8%) 1.44 (0.9 to 2.3) 1.39 (1.2 to 2.5)
Varenicline + placebo 33/84 (39.2%) 1 1 21/87 (24.1%) 1 1
Weeks 2 to 24       
Varenicline + nicotine patch 27/78 (34.6%) 0.99 (0.6 to 1.5) 1.0 (0.7 to 1.6) 29/92 (31.5%) 1.52 (1.0 to 2.5) 1.46 (1.2 to 2.8)
Varenicline + placebo 30/84 (35.7%) 1 1 18/87 (20.6%) 1 1
  1. aAdjusted by age, gender and therapist. CI, confidence interval; N, number; OR, odds ratio.