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Table 6 Adjusted odds ratios for renal cell carcinoma by age-decade: Cigarette smoking (pack-years) and home ETS (years)

From: Smoking, environmental tobacco smoke, and risk of renal cell cancer: a population-based case-control study

 

Cigarette smoking (pack-years)a

Home ETS (years)b

 

Cases (%)

Controls (%)

AOR

(95% CI)c

Cases (%)

Controls (%)

AOR

(95% CI)c

40 – 49 years

      

   Reference

14 (56%)

18 (47%)

1.00

5 (36%)

5 (28%)

1.00

   Level 1

6 (24%)

14 (37%)

0.48 (0.13 – 1.70)

6 (43%)

8 (44%)

0.85 (0.15 – 5.01)

   Level 2

5 (20%)

6 (16%)

1.26 (0.29 – 5.55)

3 (21%)

5 (28%)

0.83 (0.11 – 6.27)

   Total

25 (100%)

38 (100%)

 

14 (100%)

18 (100%)

 

50 – 59 years

      

   Reference

22 (35%)

23 (36%)

1.00

5 (23%)

7 (30%)

1.00

   Level 1

12 (19%)

21 (33%)

0.69 (0.26 – 1.78)

10 (46%)

13 (57%)

0.66 (0.14 – 3.11)

   Level 2

29 (46%)

20 (31%)

1.61 (0.69 – 3.79)

7 (32%)

3 (13%)

2.20 (0.30 – 15.94)

   Total

63 (100%)

64 (100%)

 

22 (100%)

23 (100%)

 

60 – 69 years

      

   Reference

40 (37%)

29 (30%)

1.00

13 (33%)

7 (25%)

1.00

   Level 1

26 (24%)

33 (34%)

0.57 (0.28 – 1.15)

10 (25%)

14 (50%)

0.35 (0.08 – 1.49)

   Level 2

42 (39%)

36 (37%)

0.84 (0.43 – 1.64)

17 (43%)

7 (25%)

1.17 (0.28 – 4.94)

   Total

108 (100%)

98 (100%)

 

40 (100%)

28 (100%)

 

70 – 79 years

      

   Reference

32 (34%)

32 (40%)

1.00

6 (19%)

12 (38%)

1.00

   Level 1

23 (24%)

21 (26%)

1.06 (0.49 – 2.31)

6 (19%)

11 (34%)

1.17 (0.28 – 4.97)

   Level 2

40 (42%)

28 (35%)

1.32 (0.64 – 2.71)

20 (63%)

9 (28%)

6.29 (1.50 – 26.29)

   Total

95 (100%)

81 (100%)

 

32 (100%)

32 (100%)

 

≥ 80 years

      

   Reference

21 (51%)

22 (61%)

1.00

6 (30%)

7 (32%)

1.00

   Level 1

9 (22%)

9 (25%)

0.90 (0.26 – 3.12)

6 (30%)

7 (32%)

1.48 (0.24 – 9.14)

   Level 2

11 (27%)

5 (14%)

2.18 (0.62 – 7.70)

8 (40%)

8 (36%)

1.43 (0.30 – 6.86)

   Total

41 (100%)

36 (100%)

 

20 (100%)

22 (100%)

 
  1. a Cigarette smoking
  2. Reference: never-smoker
  3. Level 1: ≤ 20 pack-years
  4. Level 2: > 20 pack-years
  5. b Home ETS
  6. Reference: never exposed
  7. Level 1: ≤ 20 years
  8. Level 2: > 20 years
  9. c Adjusted for gender, race, and BMI