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Table 4 Smoking attributable fraction for tuberculosis mortality

From: The reduction of tuberculosis risks by smoking cessation

  N Smoking Prevalence‡ HR† 95% CI Smoking Attributable Fraction §
   Current smoker 90,580 25.55% 3.37 (1.4~8.1) 37.7%
   Ex-smoker 23,787 3.65% 2.02 (0.7~6.0) 6.9%
   Non- smoker 270,488   1.00   
Total      44.6%
  1. † : HR adjusted for age, gender, education and drinking, BMI and DM history with nonsmokers as reference group (from table 2)
  2. ‡ : Smoking prevalence from Wen et al. [25]
  3. §: Smoking attributable fraction = Prevalence*(HR - 1)/{1 + [Prevalence*(HR - 1)]}