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Table 1 Distribution of NOWAC postmenopausal participants according to consumption of total, filtered, boiled and instant coffee

From: High coffee consumption and different brewing methods in relation to postmenopausal endometrial cancer risk in the Norwegian Women and Cancer Study: a population-based prospective study

 

Total coffee, %a

Boiled coffee

Filtered coffee

Instant coffee

  

Combined with other brewing methods, %b

Only boiled coffee, %

Combined with other brewing methods, %

Only filtered coffee, %

Combined with other brewing methods, %

Only instant coffee, %

No of participants

n = 97 926

n = 93 858

n = 32 049

n = 93 858

n = 60 025

n = 93 858

n = 22 501

≤ 1 cups per day

16.1

80.0

54.4

40.1

25.6

91.7

77.5

2-3 cups per day

32.9

7.9

16.1

25.9

30.4

5.4

13.3

4-7 cups per day

37.8

8.4

20.2

25.9

33.4

2.4

7.5

≥ 8 cups per day

13.2

3.7

9.3

8.1

10.6

0.5

1.7

No of cases

n = 462

n = 452

n = 174

n = 452

n = 322

n = 452

n = 112

≤ 1 cups per day

17.7

77.9

51.2

44.2

27.6

92.7

79.5

2-3 cups per day

37.1

10.4

21.8

27.0

34.2

4.6

10.7

4-7 cups per day

38.3

10.2

23.0

25.0

32.9

2.3

8.0

≥ 8 cups per day

6.9

1.5

4.0

3.8

5.3

0.4

1.8

  1. aTotal coffee is combination of responses on total coffee consumption in the total coffee version of the questionnaire and filtered, boiled and instant coffee consumption in the brewing methods version of the questionnaire. bCombined with other types: those women who positively responded to question about “total coffee consumption” or/and other brewing method (filtered, boiled, instant).