Table 4

Odds ratios of bladder cancer for drinking of maté, coffee, tea, by smoking status

Category

Never smokers

Ever smokers

Maté drinking (liters/day × years)

Category

Cases/Controls

OR

95% CI

Cases/Controls

OR

95% CI

Never drinkers

10/30

1.0

8/41

1.0

1–47

12/48

0.95

0.32–2.86

54/108

2.51

1.06–5.95

48–69

16/38

1.35

0.46–3.95

61/109

2.97

1.25–7.03

70+

10/20

2.31

0.65–8.23

84/107

4.30

1.82–10.1

p-value for trend

0.2

<0.01

Coffee drinking (total coffee, cups/week)

Category

Cases/Controls

OR

95% CI

Cases/Controls

OR

95% CI

Never drinkers

26/91

1.0

109/241

1.0

1–6

17/36

2.22

0.97–5.12

67/97

1.33

0.88–2.00

7+

5/9

2.02

0.54–7.54

31/27

2.04

1.12–3.72

p-value for trend

0.08

0.01

Tea drinking (total tea, cups/week)

Category

Cases/Controls

OR

95% CI

Cases/Controls

OR

95% CI

Never drinkers

34/111

1.0

146/308

1.0

1–6

11/20

2.22

0.84–5.83

48/52

1.91

1.20–3.04

7+

3/5

1.52

0.27–8.59

13/5

5.90

1.97–17.6

p-value for trend

0.2

<0.01

OR, odds ratio adjusted for age, sex, residence, urban/rural status, education, family history of bladder cancer among first-degree relatives, body mass index, occupation, soft drink intake, and milk intake, and, when appropriate, maté drinking, coffee drinking, and tea drinking

CI, confidence interval.

De Stefani et al. BMC Cancer 2007 7:57   doi:10.1186/1471-2407-7-57