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Table 2 By intention to treat, quit rates of two groups at 1, 3, 6 and 12 month follow-up in 547 male smokers

From: Effectiveness of additional follow-up telephone counseling in a smoking cessation clinic in Beijing and predictors of quitting among Chinese male smokers

  FC N (%) FCF N (%) Crude OR (95 % CI) P-value Adjusted ORa (95 % CI) P-value Adjusted ORb (95 % CI) P-value
  (N = 149) (N = 398)    
1 month follow-up      
 7-day point prevalence 24 (16.1) 74 (18.6) 1.19 (0.72–1.97) 0.50 1.02 (0.60–1.73) 0.94 1.05 (0.60–1.85) 0.86
3 month follow-up      
 7-day point prevalence 26 (17.4) 92 (23.1) 1.42 (0.88–2.31) 0.15 1.30 (0.79–2.14) 0.31 1.35 (0.79–2.31) 0.27
 1 month continuous abstinence 23 (15.4) 73 (18.3) 1.23 (0.74–2.05) 0.43 1.11 (0.65–1.88) 0.71 1.17 (0.67–2.05) 0.59
6 month follow-up      
 7-day point prevalence 24 (16.1) 103 (25.9) 1.82 (1.11–2.97) 0.02 1.70 (1.03–2.82) 0.04 1.92 (1.12–3.32) 0.02
 1 month continuous abstinence 23 (15.4) 95 (23.9) 1.72 (1.04–2.83) 0.03 1.64 (0.98–2.74) 0.06 1.82 (1.05–3.16) 0.03
 3 month continuous abstinence 22 (14.8) 77 (19.3) 1.39 (0.83–2.32) 0.22 1.31 (0.77–2.24) 0.32 1.48 (0.83–2.62) 0.19
12 month follow-up      
 7-day point prevalence 22 (14.8) 105 (26.4) 2.07 (1.25–3.43) 0.005 2.08 (1.24–3.50) 0.006 2.34 (1.34–4.10) 0.003
 6 month continuous abstinence 16 (10.7) 78 (19.6) 2.03 (1.14–3.60) 0.02 2.14 (1.19–3.88) 0.01 2.41 (1.28–4.52) 0.006
  1. Face-to-face counseling plus follow-up telephone counseling, FCF; Face-to-face counseling only, FC; Odds ratio, OR; Confidence Interval, CI
  2. aAdjusted for demographic characteristics, perceived difficulty of quitting, willingness to pay for quitting and year of the first visit
  3. bAdjusted for all factors in Table 1 (with the exception of cigarette consumption) and year of the first visit