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Table 4 Internal Consistency and Reliability for Nutrition Scales

From: Validation of a survey instrument to assess home environments for physical activity and healthy eating in overweight children

Scale from Home Environment Survey (Item source; 1 = Food Availability Questionnaire; 2 = Items developed for this survey from literature review; 3 = Family Eating and Activity Habits Questionnaire)

Item Retained in final Home Environment Survey

Cronbach's Alpha

Inter-rater

Intra-Class Coefficients

Test-retest

Intra-Class Coefficients

Fruit/Vegetable Availability – Total Scale

 

.84

.60

.82

   Apples (1)

Yes

 

.73

.79

   Applesauce (1)

Yes

 

.75

.90

   Bananas (1)

Yes

 

.65

.85

   Cantaloupe/Melon (1)

Yes

 

.54

.75

   Fruit Salad (1)

Yes

 

.64

.69

   Grapes (1)

Yes

 

.69

.74

   Oranges (1)

Yes

 

.68

.76

   Peaches (1)

Yes

 

.62

.63

   Strawberries (1)

Yes

 

.71

.76

   Watermelon (1)

Yes

 

.66

.74

   Other (2)

Yes

 

.39

.38

   Applejuice (1)

Yes

 

.79

.85

   Grapejuice (1)

Yes

 

.72

.71

   Orangejuice (1)

Yes

 

.75

.83

   Fruit juice blend (2)

Yes

 

.60

.76

   Other 100% Fruit juice (2)

Yes

 

.79

.75

   Broccoli (1)

Yes

 

.77

.85

   Carrots (1)

Yes

 

.59

.78

   Cauliflower (1)

Yes

 

.71

.85

   Celery (1)

Yes

 

.66

.85

   Corn (1)

Yes

 

.67

.78

   Lettuce (1)

Yes

 

.32

.77

   Peas (1)

Yes

 

.78

.87

   Green Beans (1)

Yes

 

.44

.83

   Potatoes (1)

Yes

 

.26

.83

   Tomatoes (1)

Yes

 

.77

.84

   Other (2)

Yes

 

Not calculated due to low n (n = 7)

.55

Fruit/Vegetable Accessibility – One Item Scale

 

N.A.

.50

.49

   How often do you store Fruits/Vegetables in a place that is easily seen (2)

Yes

 

.47

.48

   How often do you store Fruits/Vegetables in place that is known but not seen (2)

No

 

.52

.44

   How often do you store Fruits/Vegetables in a hiding place (2)

No

 

-.10

.01

Fat/Sweets Availability – Total Scale

 

.80

.67

.80

   Chips (3)

Yes

 

.71

.81

   Popcorn (3)

Yes

 

.54

.65

   Nuts (3)

Yes

 

.77

.80

   Crackers (3)

Yes

 

.42

.72

   Sunflower Seeds (3)

Yes

 

.79

.74

   Sugared Drinks (2)

Yes

 

.79

.86

   Soda (2)

Yes

 

.69

.78

   Snack bars (2)

Yes

 

.62

.83

   Candy (3)

Yes

 

.61

.73

   Wafers (3)

Yes

 

.13

.63

   Cookies (3)

Yes

 

.59

.73

   Cake (2)

Yes

 

.63

.66

   Chocolate (2)

Yes

 

.36

.71

   Ice cream, frozen desserts (2)

Yes

 

.67

.80

Fat/Sweet Accessibility (Total Scale)

 

.59

.22

.79

   Sugared drinks easily seen (2)

Yes

 

.46

.73

   Sugared drinks not seen (2)

No

 

.39

.66

   Sugared drinks hidden (2)

Yes

 

-.20

.69

   Snack foods easily seen (2)

Yes

 

.43

.68

   Snack foods not seen (2)

No

 

.51

.50

   Snack foods hidden (2)

Yes

 

.50

.59

Healthy Eating Parental Role Modelling (Total Scale)

 

.73

.54

.82

   Eat healthy snacks (2)

Yes

 

.52

.67

   Eat meals in living/TV Area (3)

Yes

 

.63

.86

   Take second helpings (3)

Yes

 

.37

.64

   Eat unhealthy snacks (2)

Yes

 

.52

.69

   Drink sugared drinks (2)

Yes

 

.45

.83

   Eat while standing (3)

Yes

 

.44

.65

   Eat from pot/pan (3)

Yes

 

.15

.75

   Eat while watching (3) TV/reading (3)

Yes

 

.48

.77

   Eat when you were bored (3)

Yes

 

.19

. 79

   Eat when you were in a bad mood/angry (3)

Yes

 

.50

.78

   Eat in a disorderly way (3)

Yes

 

.33

.67

   Eat late at night (3)

Yes

 

.64

.75

Healthy Eating Parental Policies (Total Scale)

 

.79

.24

.80

   What do you do when your child is not hungry (3)

No

 

.43

.75

   Use food as a reward (2)

Yes

 

.62

.69

   Use food as a punishment (2)

No

 

.34

.69

   Prepare meals with child

Yes

 

.38

.76

   Plan meals with child (2)

Yes

 

.25

.78

   Offer healthy snacks (2)

Yes

 

.68

.69

   Eat breakfast with child (3)

Yes

 

.41

.76

   Eat lunch with child (3)

Yes

 

.09

.73

   Eat pm snack with child (3)

Yes

 

-.41

.65

   Eat dinner with child (3)

Yes

 

.31

.68

   Have scheduled meals (2)

Yes

 

.40

.76

   Can child eat snacks without permission (3)

Yes

 

.67

.63

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International Journal of Behavioral Nutrition and Physical Activity

ISSN: 1479-5868

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