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Table 2 Relative validity and test-retest reliability of the New Zealand Diet Quality Index for Adolescents

From: Development and validation of a food-based diet quality index for New Zealand adolescents

 

Relative validity (n = 41)

Reliability (n = 52)

Component

CC1

% CC

% GM

CC2

% CC

% GM

FRUIT

0.28

39

15

0.67

62

4

VEGGIE

0.21

34

5

0.58

62

2

CEREAL

0.57

63

2

0.56

90

10

DAIRY

0.40

39

15

0.63

73

10

MEAT

0.27

27

7

0.32

44

12

Total Score

0.39

51

10

0.65

60

6

  1. Correlation coefficients (CC), percent correctly classified (% CC), percent grossly misclassified (% GM), Fruits (FRUIT), Vegetables (VEGGIE), Bread and cereals (CEREAL), Milk and milk products (DAIRY), Meat and alternatives (MEAT).
  2. 1 Pearson’s correlations for FRUIT, MEAT and Total Score while Spearman’s correlations for VEGGIE, CEREAL and DAIRY between FQ and 4DFR.
  3. 2 Pearson’s correlations for FRUIT, MEAT and Total Score while Spearman’s correlations for VEGGIE, CEREAL and DAIRY between first and second FQs.
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BMC Public Health

ISSN: 1471-2458

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