Table 6.
Nutrition and physical activity social environment – means, reliability, and validity
| Reliability | Validity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Staff behavior | Source | Means (range day 1–4) | p-value means | ICC1 | ICC4 | Corr (avg) | Corr (days) | Avg dev | Dev as % of mean |
| During a meal/snack, the classroom teacher… | |||||||||
| Ate/drank an unhealthy food or beverage | Obs | 1.18 –1.70 | 0.37 | 0.47 | 0.78 | ||||
| Avg staff | 0.90 – 1.09 | 0.75 | 0.47 | 0.78 | 0.26 | 0.02 – 0.45 | 0.58 | 56.9 | |
| Taught children about food eating | Obs | 0.60 – 0.76 | 0.66 | 0.39 | 0.72 | ||||
| Avg staff | 0.46 – 0.86 | 0.02 | 0.21 | 0.51 | 0.16 | 0.10 – 0.22 | −0.03 | 4.1 | |
| Sat with the children | Obs | 1.02 – 1.42 | 0.33 | 0.48 | 0.79 | ||||
| Avg staff | 1.53 – 1.78 | 0.47 | 0.51 | 0.81 | 0.28 | 0.21 – 0.36 | −0.36 | 22.1 | |
| Ate the same food as the children | Obs | 1.06 – 1.44 | 0.21 | 0.44 | 0.76 | ||||
| Avg staff | 1.06 – 1.18 | 0.90 | 0.60 | 0.86 | 0.46 | 0.38 – 0.53 | 0.30 | 26.1 | |
| Ate fruit or vegetables in front of children | Obs | 0.60 – 0.90 | 0.24 | 0.35 | 0.68 | ||||
| Avg staff | 0.66 – 0.86 | 0.47 | 0.39 | 0.72 | 0.39 | 0.30 – 0.45 | 0.05 | 6.4 | |
| Encouraged a child to eat more (3 items) | Obs | 0.46 – 0.56 | 0.94 | 0.23 | 0.55 | ||||
| Avg staff | 0.61 – 1.21 | 0.03 | 0.33 | 0.67 | 0.004 | −0.11 – 0.04 | −0.49 | 45.4 | |
| During play time, the… | |||||||||
| Teacher joined children active play (3 items) | Obs | 1.36 – 1.88 | 0.42 | 0.32 | 0.48 | ||||
| Avg staff | 0.52 – 0.71 | 0.10 | 0.43 | 0.75 | 0.42 | 0.22 – 0.50 | −0.05 | 11.4 | |
| Teacher read a book promoting activity | Obs | 0.04 – 0.10 | 0.62 | −0.14 | −0.33 | ||||
| Avg staff | 0.17 – 0.21 | 0.89 | 0.26 | 0.58 | 0.11 | −0.01 – 0.39 | – | – | |
| Children lost outside time (3 items) | Obs | 0.05 – 0.09 | 0.41 | 0.29 | 0.46 | ||||
| Avg staff | 0.05 – 0.13 | 0.01 | 0.16 | 0.44 | 0.25 | 0.07 – 0.35 | −0.01 | 7.3 | |
| Children received extra outside time (2 items) | Obs | 0 – 0 | – | – | – | ||||
| Avg staff | 0.02 – 0.05 | 0.74 | 0.16 | 0.43 | – | – | – | – | |
| Children lost TV time (2 items) | Obs | 0.00 – 0.01 | 0.51 | −0.10 | −0.22 | ||||
| Avg staff | 0.01 – 0.02 | 0.46 | 0.35 | 0.69 | 0.16 | −0.02 – 0.26 | −0.01 | 38.4 | |
| Children received extra TV time (2 items) | Obs | 0.00 – 0.01 | 0.35 | – | – | ||||
| Avg staff | 0.00 – 0.01 | 0.72 | −0.04 | −0.17 | 0.47 | 0.00 – 0.70 | – | – | |
P-values represent a statistical comparison of the equivalence of means for each day of reporting (means on days 1–4) for each reporter. P-values >0.05 indicate no statistical difference between means across days
ICC intraclass correlation, Corr Pearson correlation, Dev Difference (observation – staff report)