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Table 2 Foods that contribute to folate intake and their cumulative percentage contribution to total intake as assessed by dietary records.

From: Validity of a self-administered food frequency questionnaire (FFQ) and its generalizability to the estimation of dietary folate intake in Japan

Men

Cohort I

Cohort II

Women

Cohort I

Cohort II

Food item

Rank1

%

Rank2

%

Food items

Rank1

%

Rank2

%

Spinach, leaves

1

6.5

3

5.4

Spinach, leaves

1

7.1

3

5.6

Well-milled rice

2

6.4

4

5.0

Green tea, sencha, infusion

2

6.1

1

10.1

Green tea, sencha, infusion

3

5.6

1

9.1

Cabbage, head

3

4.7

5

3.4

Cabbage, head

4

4.9

5

3.6

Well-milled rice

4

4.5

4

3.6

Chicken eggs, whole

5

3.8

6

3.6

Chicken eggs, whole

5

3.5

6

3.1

Beer

6

3.3

7

3.0

Aspargus, shoots

6

2.8

36

0.7

Radish, root with skin

7

2.6

8

2.5

Chiken offal, liver

7

2.5

15

1.2

Pork offal, liver

8

2.4

35

0.7

Radish, root with skin

8

2.5

7

2.4

Aspargus, shoots

9

2.3

34

0.7

Bracken, young shoots

9

1.9

72

0.3

Natto, itohiki-natto (whole fermented using Bacillus natto)

10

2.0

13

1.4

Natto, Itohiki-natto (Whole fermented using Bacillus natto)

10

1.9

10

1.7

Miso, rice- koji miso, dark yellow type

11

1.9

46

0.5

Broccoli, florets

11

1.8

8

2.0

Chiken offal, liver

12

1.8

12

1.4

Miso, rice- koji miso, dark yellow type

12

1.8

55

0.4

Chinese cabbage, head

13

1.8

11

1.7

Chinese cabbage, head

13

1.7

11

1.6

Bracken, young shoots

14

1.6

67

0.3

Ordinary liquid milk

14

1.5

20

1.1

Broccoli, florets

15

1.6

9

1.8

Shoyu: soy sauce, Koikuchi-shoyu (Common type)

15

1.5

23

1.0

Shoyu: soy sauce, Koikuchi-shoyu (Common type)

16

1.6

17

1.1

Head letucce, crisp type, head

16

1.5

22

1.1

Carrots, European type, root with skin

17

1.4

16

1.1

Purple laver, toasted

17

1.5

18

1.1

Potatoes, tuber

18

1.3

23

0.9

Pork offal, liver

18

1.4

34

0.7

Head lettuce, crisp type, head

19

1.3

22

1.0

Carrots, European type, root with skin

19

1.4

17

1.1

Leaf mustard, leaves

20

1.2

75

0.2

Potatoes, tuber

20

1.3

26

0.9

Total

 

55.2

 

44.9

  

52.9

 

43.1

  1. 1 Food items are listed in order of % contribution to total folate intake based on dietary records of Cohort I (by rank in Cohort I).
  2. 2 Rank of % contribution to total folate intake determined on the basis of the dietary records of Cohort II.