Reliability of Questionnaires to Assess the Healthy Eating and Activity Environment of a Child's Home and School
Table 3
Reliability (†) demonstrated by intraclass correlation coefficient (ICC) and 95% confidence intervals (CI) for the parent outcomes and internal consistency for the parent scores.
Score
Reliability data
Median (interquartile range)
Target score/response
ICC
95% CI
Cronbach’s alpha
Time 1
Time 2
Food availability
Sweet beverages
0.86**
0.76–0.91
0.60
13 (10–15)
12.5 (10–15)
≥12 (less than weekly each item)
Non-core foods
0.81**
0.7–0.89
0.78
20 (17–23)
20 (17–23)
≥21 (less than weekly each item)
Fruit and vegetables
0.61**
0.42–0.75
0.13
13 (12–14)
13 (12–14)
≥12 (weekly or more often each item)
Healthy eating
Healthy attitudes
0.55**
0.34–0.70
0.35
22 (19–24)
22 (20–24)
≥24 (agree/strongly agree each item)
Healthy rules
0.77**
0.63–0.86
0.55
42 (39–45)
42 (38–45)
≥40 (often/always each item)
Healthy eating behaviour
Serves of fruit
0.80**
0.69–0.88
N/A
2 (1-2)
2 (1–3)
2 or mor
Serves of vegetables
0.86**
0.77–0.91
N/A
3 (1–4)
3 (2–4)
3 or mor
Drink when thirsty
0.92**
0.88–0.95
N/A
6 (6-6)
6 (5-6)
Wate
Knowledge of healthy eating
Fruit
0.61**
0.41–0.75
N/A
2 (2-2)
2 (2-2)
1-2/da
Vegetable
0.66**
0.49–0.78
N/A
3 (2-3)
3 (2-3)
3–5 serves per da
Activity
Attitude activity
0.74**
0.59–0.83
0.46
24 (22–28)
26 (22–28)
≥28 (agree/strongly agree each item)
Rules activity
0.67**
0.50–0.79
0.21
11 (9–12)
11 (9–12)
≥12 (often/always each item)
Other
Money
0.37*
0.13–0.54
N/A
2 (2-2)
2 (2-2)
≥3 (disagree/strongly disagree)
Breastfeeding
0.71**
0.56–0.82
N/A
2 (2-2)
2 (2-2)
≥3 (disagree/strongly disagree)
. . † varied from 57 to 60 with for sweetened beverage score 53. As per Australian Guide to Healthy Eating [15]. N/A: not applicable.
