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Table 4 Percentage agreement (%) in quartile distribution of dietary intake between the IOS or IOS + SFFQ and the 7DFD (n = 221)

From: Relative validity of an intelligent ordering system to estimate dietary intake among university students from a medical school in Shanghai, China

 

IOS vs. 7DFD

IOS + SFFQ vs. 7DFD

Same quartile

Same or adjacent quartile

Opposite quartile

Same quartile

Same or adjacent quartile

Opposite quartile

Energy (kcal)

54

91

1

50

88

3

Protein (g)

50

91

2

45

90

2

Fat (g)

61

94

0

58

94

1

Carbohydrate (g)

53

88

1

49

86

2

Cereals (g) a

63

97

0

Tubers (g) a

60

92

1

Vegetables (g) a

65

96

0

Fruits (g)

38

70

9

45

84

4

Animal-sourced foods (g) a

59

95

0

Milk and dairy products (g)

35

62

16

44

84

5

Soybeans and nuts (g)

69

97

0

59

92

2

Salt equivalents (g) a

56

91

0

Oil (g) a

55

94

0

Added sugar (g)

42

79

3

43

78

6

  1. a Classification results between the IOS + SFFQ and the 7DFD were consistent with those obtained when comparing the IOS and the 7DFD, thus denoted by “…” to signify repetition