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Table 21 Approximate estimation of the relationship in males between the mentholated/non-mentholated lung cancer relative risk (RR) and the estimated lung cancer risk of Black people relative to White people

From: Systematic review of the epidemiological evidence comparing lung cancer risk in smokers of mentholated and unmentholated cigarettes

   Never smoked Ex smoker   Current smoker   Total
   Total Total Menthol Non-menthol Total Menthol Non-menthol Total
   (1)   (2) (3)   (4) (5)  
  White people         
  Frequency1 0.501 0.262    0.237    1.000
  Menthol proportionb    0.218 0.782   0.218 0.782  
(a) Frequency by menthol 0.501   0.057 0.205   0.052 0.185 1.000
(b) Risk relative to never smokersc 1.00 9.36 9.36RR 9.36 22.36 22.36RR 22.36  
  Black people         
  Frequency1 0.572 0.158    0.270    1.000
  Menthol proportionb    0.835 0.165   0.835 0.165  
(a) Frequency by menthol 0.572   0.132 0.026   0.225 0.045 1.000
(b) Risk relative to never smokersc 1.00 9.36 9.36RR 9.36 22.36 22.36RR 22.36  
  Assumed value of RR    Black/White relative riskd   
  1.0     0.980    
  1.1     1.035    
  1.2     1.088    
  1.3     1.138    
  1.5     1.234    
  1.8     1.365    
  2.0     1.445    
  1. a See Table 3.
  2. b See Table 1 - proportions assumed the same for current and ex smokers.
  3. c The source of the relative risk estimates of 9.36 for ex smokers and 22.36 for current smokers is the 1989 US Surgeon-General's Report Table 6 p150 [65]. As they are based on Cancer Prevention Study II starting in 1982, a study in a predominantly White population, the relative risk estimates have been assumed to apply to non-mentholated cigarette smokers. RR is the assumed relative risk for mentholated compared to non-mentholated cigarette smoking.
  4. d Estimated by summing for each race, the product of rows (a) and (b) over columns (1), (2), (3), (4) and (5), and then dividing the total for Black people by the total for White people.