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Table 6 Risk of lung cancer by pack-years of mentholated cigarette use among ever smokers - Los Angeles County case-control study [69]

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

   

Pack-years of mentholated smoking

Gender/Race

No of cases

 

0

1-15

16-31

32+

Anya

  

Adjusted

RR

RR (CI)

RR (CI)

RR (CI)

RR (CI)

Male/Both

202

No

1.00

0.63 (0.42-0.95)

1.40 (0.69-2.84)

2.60 (1.33-5.08)

0.92 (0.65-1.31)

  

Age, raceb

1.00

0.62 (0.41-0.93)

1.35 (0.67-2.73)

2.52 (1.29-4.92)

0.90 (0.64-1.28)

  

Age, race and othersc

1.00

0.87 (0.57-1.37)

1.21 (0.56-2.62)

1.48 (0.71-3.05)

1.00 (0.68-1.48)

Female/Both

135

No

1.00

0.90 (0.52-1.57)

0.83 (0.36-1.96)

0.90 (0.38-2.15)

0.89 (0.55-1.44)

  

Age, raceb

1.00

0.87 (0.50-1.52)

0.68 (0.29-1.60)

0.72 (0.30-1.71)

0.80 (0.49-1.29)

  

Age, race and othersc

1.00

1.58 (0.77-3.22)

0.51 (0.19-1.34)

0.41 (0.15-1.11)

0.88 (0.50-1.57)

Both/White peopled

181

No

1.00

0.64 (0.41-1.00)

1.35 (0.58-3.11)

1.80 (0.87-3.75)

0.86 (0.59-1.26)

  

Age, genderb

1.00

0.68 (0.44-1.06)

1.41 (0.61-3.25)

1.78 (0.86-3.70)

0.90 (0.61-1.31)

  

Age, gender and othersc

1.00

1.01 (0.61-1.68)

1.01 (0.41-2.47)

1.06 (0.47-2.36)

1.02 (0.66-1.58)

Both/Black peoplee

156

No

1.00

0.71 (0.43-1.16)

0.91 (0.44-1.89)

1.56 (0.72-3.37)

0.85 (0.55-1.32)

  

Age, genderb

1.00

0.66 (0.40-1.08)

0.77 (0.37-1.60)

1.46 (0.68-3.16)

0.78 (0.51-1.21)

  

Age, gender and othersc

1.00

0.96 (0.54-1.70)

0.69 (0.30-1.60)

0.90 (0.38-2.12)

0.89 (0.53-1.47)

Both/Both

337

No

1.00

0.72 (0.52-1.00)

1.20 (0.70-2.06)

1.81 (1.07-3.07)

0.93 (0.70-1.23)

  

Age, race and genderb

1.00

0.70 (0.51-0.97)

1.04 (0.61-1.79)

1.64 (0.97-2.76)

0.87 (0.66-1.15)

  

Age, race, gender and othersc

1.00

1.05 (0.72-1.54)

0.92 (0.50-1.68)

0.95 (0.53-1.70)f

1.00 (0.72-1.40)

  1. aRRs and CIs for any use estimated as described in additional file 1: Methods for deriving RR estimates.
  2. b The width of the estimated CI is taken to be the same as the width of the unadjusted estimates, so may be slightly too narrow.
  3. c The other adjustment factors were total pack-years and years since quitting.
  4. d White people are defined as Caucasian.
  5. e Black people are defined as African-American.
  6. f Similarly adjusted RRs and CIs are also available for 32-53 pack-years, 0.76 (0.37-1.59) and 54+ pack-years 1.38 (0.56-3.40). For 54+ pack-years these estimates did not vary between current smokers (RR 1.23, 0.36-1.42) and former smokers (RR 1.78, 0.44-7.19).