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Table 3 Effect of varenicline + NRT combination on abstinence rates

From: Is a combination of varenicline and nicotine patch more effective in helping smokers quit than varenicline alone? A randomised controlled trial

Period after TQD Placebo patch Nicotine patch Pearson Chi-square; p value
  N=59 N=58  
24 hours N (%) 47 (80) 46 (79) x 2 =.00; p = 0.96
1 week N (%) 35 (59) 40 (69) x 2 =1.18; p = 0.28
4 weeks N (%) 35 (59) 35 (60) x 2 =0.01; p = 0.91