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Table 4 Intake of selected food groups (mean (SD) and median) by SFFQ-2007 and SFFQ-1999, mean % difference, within person difference (SD) between the SFFQs and Spearman’s correlation (r) (n = 93)

From: Effect of changes in a food frequency questionnaire: comparing data from two national dietary survey instruments among 12-month-old infants

 

SFFQ-2007

SFFQ-1999

Mean % difference

Within person difference

Spearman’s correlation

Intake (g/day)

Mean (SD)

Median

Mean (SD)

Median

%

SD

r

Baby porridge

253.7 (256.8)

204.0

221.0 (171.2)

200.0

14.8

218.5

0.54

Water

257.6 (178.9)

240.0

283.9 (199.5)

300.0

−9.3

241.6

0.48

Commercial baby food

156.2 (144.3)

117.4

179.8 (178.7)

141.2

−13.1

183.4

0.57

Infant formula

135.5 (220.7)

0.0

149.8 (229.7)

0.0

−9.5

221.4

0.46

Milk (to drink)

99.6 (163.6)

17.4

122.9 (200.2)

17.4

−18.9

231.1

0.14

Fruit

87.2 (81.3)

73.7

99.0 (104.3)

70.0

−12.0

86.1

0.64

Bread

72.2 (59.6)

60.0

62.3 (36.6)

60.0

15.9

56.7

0.48

Yoghurt

41.2 (51.0)

25.5

55.6 (71.8)

25.6

−25.8*

71.6

0.47

Vegetables

33.3 (33.4)

25.6

20.1 (22.7)

13.2

65.7**

29.4

0.55

Meat

26.3 (17.5)

24.1

28.7 (20.8)

24.8

−8.2

21.1

0.42

Potato

23.1 (21.3)

18.1

23.1 (27.8)

16.9

−0.3

24.6

0.49

Fruit juices

20.7 (47.1)

0.0

29.6 (89.8)

0.0

−30.0

80.0

0.71

Squash

16.8 (36.0)

0.0

21.4 (57.9)

0.0

−27.8

43.5

0.56

Fish

13.8 (14.4)

10.0

10.3 (12.4)

6.0

34.1**

13.3

0.70

Butter (on bread)

7.5 (8.8)

6.0

7.5 (7.5)

6.0

0.4

8.9

0.51

Cakes

4.0 (5.7)

2.3

3.3 (4.1)

1.8

24.0

4.8

0.62

Cod liver oil

1.1 (1.9)

0.0

1.1 (1.9)

0.0

−3.9

1.3

0.74

  1. Mean % difference between the SFFQs = (mean difference (SFFQ-2007 minus SFFQ-1999)/mean SFFQ-1999)*100.
  2. *P < 0.05, **P < 0.01 (P is based on Wilcoxon’s signed rank test).