Table 1

Type of milk feeding, decisions and advice (21 items)

Question wording

    Test-retest reliability
    a

    Validity
    b

    Frequency
    c


What feeding methods are you currently using? (n = 40)

Questiond

%Agreemente

Kappaf

%Agreemente

Kappaf

n(%)

Breast milk directly from the breast

1a

100.0

1.00

100.0

1.00

18(45)

Expressed breast milk from bottle

1b

97.3

0.91

91.9

0.68

7(18)

Formula milk, made up from powder or concentrate

1c

100.0

1.00

100.0

1.00

25(63)

Ready-to use formula milk

1d

91.9

0.79

75.7

0.24

12(30)

Others

1e

86.5

0.47

86.5

0.25

7(18)

When deciding how often to feed your baby, do you usually? (n = 40)

A)Feed your baby on demand

2a

88.9

0.75

75.7

0.49

14(35)

B) Follow a routine

2b

91.4

0.72

83.8

0.42

9(23)

Do a combination of A and B

2c

82.9

0.66

70.3

0.40

21(50)

When deciding how much to feed your baby, do you usually? (n = 40)

Follow guidance

17

92.1

0.36

91.9

-0.04

3(7)

Depend on baby's appetite

37(93)

Depend on baby's growth

0(0)

Which brand, and type of formula milk do you usually use? (n = 26)

Brand

6a

87.5

0.83

87.5

0.83

Type

6b

82.6

0.71

79.0

0.65

If you make up formula from milk powder, are the scoops usually? (n = 25)

rounded/heaped OR flat

11a

92.7

0.85

Insufficient responses

0(0)

loosely packed OR tightly packed

11b

78.3

0.56

54.6

0.07

14(56)

do you add powder first OR water first

11c

100.0

1.00

100.0

1.00

1(4)

If you received/read advice on formula

feed preparation, we would like to know which advice you followed. (n = 25)

Midwife

12a

78.3

0.57

66.7

0.23

9(36)

Health visitor

12b

73.9

0.59

45.8

0.07

12(48)

Friends

12c

87.0

0.76

50.0

0.11

13(52)

Family

12d

78.3

0.59

41.7

0.02

13(52)

Formula milk packet or tin

12e

73.9

0.55

62.5

0.32

22(88)

Leaflet

12f

90.9

0.81

75.0

0.10

6(24)

Other

12 g

100.0

1.00

95.0

0.77

2(10)


aTest-retest reliability-1st and 2nd questionnaires

bValidity-1st questionnaire and interview

cFrequency of respondents 1st questionnaire - for Question 11a- answering scoops rounded/heaped; 11b loosely packed; 11c added powder first. For Question 12a-12 g answering followed all or some of the advice.

dQuestion- Question number

eAgreement- Percentage exact agreement- over 66% good agreement

fKappa- Chance corrected agreement or Cohen's Kappa- < 0 poor; 0-0.20 slight; 0.21-0.40 fair; 0.41-0.60 moderate; 0.61-0.8 substantial; 0.81-1 almost perfect

Lakshman et al. International Journal of Behavioral Nutrition and Physical Activity 2011 8:35   doi:10.1186/1479-5868-8-35

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