Table 4: Reliability demonstrated by intraclass correlation coefficient (ICC) and 95% confidence intervals (CI) for the teacher outcomes and internal consistency for the teacher scores.

ScoreReliability dataMedian (interquartile range) Target score/response
ICC95% CICronbach’s alpha Time 1Time 2

Child exposure
Healthy eating0.86**0.67–0.940.619 (6–10)9 (7–12)20≥15 (weekly, some, agree as relevant)
Fruit and vegetables0.77**0.52–0.900.917.5 (5–11)7 (5–13)22≥16 (weekly each item)
Physical activity0.67**0.38–0.840.5821.5 (19–26)22 (19–25)23≥30 (weekly, some, agree as relevant)
Water0.82**0.63–0.91N/A5 (4-5)5 (5-5)26Used daily

Teacher skills/attitudes
Healthy eating 0.71**0.40–0.880.60 ( )4 (4–6)5 (5-5)24≥7 (some, yes as relevant)
Fruit and vegetable0.61**0.30–0.800.1123 (21–24)22 (22-23)26≥24 (agree each item)
Physical activity 0.56*0.11–0.820.22 ( )25 (24–27)24 (23–26)16≥27 (some, yes, agree as relevant)

School environment
0.67**0.39–0.84N/A3 (2-3)3 (2-3)26Agree

Teacher knowledge
Fruit0.42*0.05–0.67N/A2 (2-3)2 (2-3)271-2 serves
Vegetable0.63**0.33–0.81N/A3 (2-3)3 (3-3)273–5 serves
Screen time0.53*0.20–0.76N/A2 (1-2)2 (2-2)272 hours
Physical activity0.81**0.63–0.91N/A3 (2-3)2 (2-2)2760 minutes

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N/A: not applicable.