Table 3

Odds ratios of bladder cancer for coffee, tea and soft drinks consumption

Coffee


Category

Cases/Controls

OR

95 % CI


Drinking status

Never drinkers

135/332

1.0

Former drinkers

9/13

1.4

0.6–3.6

Current drinkers

111/156

1.7

1.2–2.3

Ever drinkers

120/169

1.6

1.2–2.3

Amount (pure coffee)

Never drinkers

135/332

1.0

(cups/week)

1–6

22/28

1.6

0.8–3.1

7+

15/21

2.0

0.9–4.4

p-value for trend

0.03

Amount (coffee with milk)

Never drinkers

135/332

1.0

(cups/week)

1–6

70/112

1.5

1.0–2.2

7+

24/24

1.9

1.0–3.7

p-value for trend

0.01

Amount (total coffee)

Never drinkers

135/332

1.0

(cups/week)

1–6

84/133

1.5

1.1–2.2

7+

36/36

2.1

1.2–3.6

p-value for trend

<0.01


Tea


Category

Cases/Controls

OR

95 % CI


Drinking status

Never drinkers

180/419

1.0

Former drinkers

1/2

1.5

0.1–19

Current drinkers

74/80

2.3

1.6–3.4

Ever drinkers

75/82

2.3

1.5–3.4

Amount (pure tea)

Never drinkers

180/419

1.0

(cups/week)

1–6

21/11

4.4

2.0–10

7+

20/32

1.5

0.8–2.8

p-value for trend

0.02

Amount (tea with milk)

Never drinkers

180/419

1.0

(cups/week)

1–6

28/40

1.7

1.0–3.0

7+

10/5

6.5

2.0–21

p-value for trend

<0.01

Amount (total tea)

Never drinkers

180/419

1.0

(cups/week)

1–6

59/72

2.1

1.4–3.1

7+

16/10

4.1

1.7–9.9

p-value for trend

<0.01


Soft drinks


Category

Cases/Controls

OR

95 % CI


Amount

Never drinkers

138/289

1.0

(bottles/years)

1–104

65/121

1.1

0.7–1.6

105+

52/91

1.1

0.7–1.7

p-value for trend

0.62


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, smoking status, years since quitting, number of cigarettes smoked per day, maté drinking, soft drink intake, milk intake, and, when appropriate, coffee drinking and tea drinking

CI, confidence interval.

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

Open Data