Module 2: Exercise 2 tables

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Table 1: Original data, counts of responses (Yes, Probably, No, Don’t know) and proportion of population exposed

Food Item

Count (n)

Proportion (%)

Yes

Probably

No

Don’t Know

Yes/

(Yes+No)

(Yes+Prob)/

(Yes+Prob+No)

Vegetarian/Vegan

2

0

3

2

40.0

40.0

Supplements

3

0

4

0

42.9

42.9

Any chicken (not including deli meat)

3

0

3

1

50.0

50.0

Any eggs

2

3

2

0

50.0

71.4

Any pork (not including deli meat)

1

2

3

1

25.0

50.0

Any beef (not including deli meat)

1

1

4

1

20.0

33.3

Any dairy (excluding cheese)

3

1

3

0

50.0

57.1

Non-dairy milk

3

0

3

1

50.0

50.0

Any cheese

4

0

3

0

57.1

57.1

Tomatoes

3

1

3

0

50.0

57.1

Any lettuce or leafy greens

4

1

1

1

80.0

83.3

Iceberg

0

2

3

2

0.0

40.0

Romaine

2

1

3

1

40.0

50.0

Spinach

4

0

1

2

80.0

80.0

Sprouts

2

1

4

0

33.3

42.9

Cucumbers

3

2

2

0

60.0

71.4

Bell peppers

4

0

2

1

66.7

66.7

Broccoli

3

0

3

1

50.0

50.0

Cauliflower

4

0

3

0

57.1

57.1

Mushrooms

4

0

3

0

57.1

57.1

Zucchini

3

1

3

0

50.0

57.1

Melons

3

0

3

1

50.0

50.0

Apples

4

1

2

0

66.7

71.4

Bananas

4

2

1

0

80.0

85.7

Citrus fruits

4

0

3

0

57.1

57.1

Any berries

5

0

2

0

71.4

71.4

Strawberries

2

2

2

1

50.0

66.7

Raspberries

2

0

3

2

40.0

40.0

Blueberries

3

2

2

0

60.0

71.4

Blackberries

3

1

3

0

50.0

57.1

Mangoes

4

0

3

0

57.1

57.1

Pineapple

1

1

5

0

16.7

28.6

Peanuts

4

0

3

0

57.1

57.1

Almonds

2

3

1

1

66.7

83.3

Walnuts

3

1

2

1

60.0

66.7

Hazelnuts (filberts)

0

0

6

1

0.0

0.0

Cashews

2

0

1

4

66.7

66.7

Pecans

2

1

3

1

40.0

50.0

Pistachios

0

0

4

3

0.0

0.0

Other nuts

1

0

3

3

25.0

25.0

Peanut butter

4

0

3

0

57.1

57.1

Other nut butters/pastes/spreads

2

1

3

1

40.0

50.0

Sunflower seeds

2

1

3

1

40.0

50.0

Sesame seeds

2

2

2

1

50.0

66.7

Chia seeds

3

2

2

0

60.0

71.4

Flax seeds

2

2

2

1

50.0

66.7

Other seeds

1

0

3

3

25.0

25.0

Cold cereals

2

0

4

1

33.3

33.3

Hot cereals

2

0

2

3

50.0

50.0

 

Table 2: Exposures with reference values

Food Item

Confirmed Cases

 

Reference

Yes

Prob

No

DK

%Y+P

Foodbook Canada*

Vegetarian/Vegan

2

0

3

2

40.0

No data

Supplements

3

0

4

0

42.9

28.2

Any chicken (not including deli meat)

3

0

3

1

50.0

85.6

Any eggs

2

3

2

0

71.4

80.7

Any pork (not including deli meat)

1

2

3

1

50.0

55.1

Any beef (not including deli meat)

1

1

4

1

33.3

78.4

Any dairy (excluding cheese)

3

1

3

0

57.1

84.6

Non-dairy milk

3

0

3

1

50.0

15.9

Any cheese

4

0

3

0

57.1

88.8

Tomatoes

3

1

3

0

57.1

72.9

Any lettuce or leafy greens

4

1

1

1

83.3

82.4

Iceberg

0

2

3

2

40.0

41.1

Romaine

2

1

3

1

50.0

48.8

Spinach

4

0

1

2

80.0

28.4

Sprouts

2

1

4

0

42.9

12.9

Cucumbers

3

2

2

0

71.4

62.9

Bell peppers

4

0

2

1

66.7

63.6

Broccoli

3

0

3

1

50.0

55.5

Cauliflower

4

0

3

0

57.1

33.0

Mushrooms

4

0

3

0

57.1

50.0

Zucchini

3

1

3

0

57.1

21.1

Melons

3

0

3

1

50.0

39.7

Apples

4

1

2

0

71.4

72.3

Bananas

4

2

1

0

85.7

76.7

Citrus fruits

4

0

3

0

57.1

65.0

Any berries

5

0

2

0

71.4

65.2

Strawberries

2

2

2

1

66.7

49.6

Raspberries

2

0

3

2

40.0

27.5

Blueberries

3

2

2

0

71.4

31.3

Blackberries

3

1

3

0

57.1

10.5

Mangoes

4

0

3

0

57.1

15.7

Pineapple

1

1

5

0

28.6

30.0

Peanuts

4

0

3

0

57.1

33.6

Almonds

2

3

1

1

83.3

41.0

Walnuts

3

1

2

1

66.7

18.5

Hazelnuts (filberts)

0

0

6

1

0.0

10.1

Cashews

2

0

1

4

66.7

26.8

Pecans

2

1

3

1

50.0

12.9

Pistachios

0

0

4

3

0.0

No data

Other nuts

1

0

3

3

25.0

No data

Peanut butter

4

0

3

0

57.1

55.0

Other nut butters/pastes/spreads

2

1

3

1

50.0

18.3

Sunflower seeds

2

1

3

1

50.0

18.3

Sesame seeds

2

2

2

1

66.7

17.1

Chia seeds

3

2

2

0

71.4

No data

Flax seeds

2

2

2

1

66.7

No data

Other seeds

1

0

3

3

25.0

No data

Cold cereals

2

0

4

1

33.3

54.3

Hot cereals

2

0

2

3

50.0

28.5

*Based on the Foodbook Survey, 2015, Public Health Agency of Canada

   

 

Table 3: Binomial probability calculations for exposures and reference population

Food Item

Confirmed Cases

 

Reference

Binomial Probability

Yes

Prob

No

DK

%Y+P

Foodbook Canada*

p-value

MEATS

Any chicken (not including deli meat)

3

0

3

1

50.0

85.6

0.0375

Any pork (not including deli meat)

1

2

3

1

50.0

55.1

0.3028

Any beef (not including deli meat)

1

1

4

1

33.3

78.4

0.0201

EGGS

Any eggs

2

3

2

0

71.4

80.7

0.2677

DAIRY PRODUCTS

Any dairy (excluding cheese)

3

1

3

0

57.1

84.6

0.0655

Non-dairy milk

3

0

3

1

50.0

No data

No data

Any cheese

4

0

3

0

57.1

88.8

0.00306

VEGETABLES

Tomatoes

3

1

3

0

57.1

72.9

0.1967

Any lettuce or leafy greens

4

1

1

1

83.3

82.4

0.4011

Iceberg

0

2

3

2

40.0

41.1

0.3452

Romaine

2

1

3

1

50.0

48.8

0.312

Spinach

4

0

1

2

80.0

28.4

0.0233

Sprouts

2

1

4

0

42.9

12.9

0.0432

Cucumbers

3

2

2

0

71.4

62.9

0.2846

Bell peppers

4

0

2

1

66.7

63.6

0.3252

Broccoli

3

0

3

1

50.0

55.5

0.3013

Cauliflower

4

0

3

0

57.1

33.0

0.1248

Mushrooms

4

0

3

0

57.1

50.0

0.2734

Zucchini

3

1

3

0

57.1

21.1

0.0341

FRUITS

Melons

3

0

3

1

50.0

39.7

0.2744

Apples

4

1

2

0

71.4

72.3

0.3183

Bananas

4

2

1

0

85.7

76.7

0.3321

Citrus fruits

4

0

3

0

57.1

65.0

0.2679

Any berries

5

0

2

0

71.4

65.2

0.2997

Strawberries

2

2

2

1

66.7

49.6

0.2306

Raspberries

2

0

3

2

40.0

27.5

0.2882

Blueberries

3

2

2

0

71.4

31.3

0.0298

Blackberries

3

1

3

0

57.1

10.5

0.003

Mangoes

4

0

3

0

57.1

15.7

0.0127

Pineapple

1

1

5

0

28.6

30.0

0.3177

NUTS & SEEDS

Peanuts

4

0

3

0

57.1

33.6

0.1306

Almonds

2

3

1

1

83.3

41.0

0.041

Walnuts

3

1

2

1

66.7

18.5

0.0117

Hazelnuts (filberts)

0

0

6

1

0.0

10.1

0.5279

Cashews

2

0

1

4

66.7

26.8

0.1577

Pecans

2

1

3

1

50.0

12.9

0.0284

Pistachios

0

0

4

3

0.0

No data

No data

Other nuts

1

0

3

3

25.0

No data

No data

Peanut butter

4

0

3

0

57.1

55.0

0.2918

Other nut butters/pastes/spreads

2

1

3

1

50.0

18.3

0.0668

Sunflower seeds

2

1

3

1

50.0

18.3

0.0668

Sesame seeds

2

2

2

1

66.7

17.1

0.0088

Chia seeds

3

2

2

0

71.4

No data

No data

Flax seeds

2

2

2

1

66.7

No data

No data

Other seeds

1

0

3

3

25.0

No data

No data

OTHER

Cold cereals

2

0

4

1

33.3

54.3

0.1929

Hot cereals

2

0

2

3

50.0

28.5

0.2491

Vegetarian/Vegan

2

0

3

2

40.0

No data

No data

Supplements

3

0

4

0

42.9

28.2

0.2086

*Based on the Foodbook Survey, 2015, Public Health Agency of Canada