# Table 3 Criterion validity of the Out-of-School Nutrition and Physical Activity Observational Practice Assessment Tool (OSNAP-OPAT)

Item N a Weekly mean (SD) b Validation criterion measure Pearson correlation (week) b P value Pearson correlation (1 day) c Range
Physical Activity
How many children do you think were active when they attended physical activity time? (0–4 scale: 0 Not offered, 1 Few, 2 Some, 3 Most, 4 All) 20 2.54 (0.39) SOPLAY 0.48 0.03 0.28 0.09-0.50
How many minutes do you think the typical child at your program was physically active today? (Mins) 15 34.40 (12.31) Accelerometer 0.43 0.11 0.23 −0.17-0.44
What is the least amount of physical activity time that was offered to any group of children today? (Mins) 15 21.13 (14.88) Accelerometer 0.59 0.02 0.33 −0.19-0.62
How many minutes do you think the typical child at your program was engaged in vigorous physical activity (i.e. activity more than a walk) today? (Mins) 15 26.59 (13.46) Accelerometer 0.43 0.11 0.21 0.09-0.36
What is the least amount of vigorous physical activity time that was offered to any group of children today? (Mins) 15 18.29 (14.41) Accelerometer 0.63 0.01 0.42 0.13-0.61
Nutrition
Was a fruit or vegetable offered at snack? (Proportion) 20 0.59 (0.29) Observation 0.84 0.0001 0.52 0.38-0.66
Were grains served at snack? (Proportion) 20 0.68 (0.34) Observation 0.60 0.005 0.47 0.25-0.56
If grains were served at snack, were whole grains served? (Proportion) 20 0.47 (0.32) Observation 0.43 0.06 0.32 0.17-0.50
Was water served (with a pitcher or from a cooler) at snack? (Proportion) 20 0.70 (0.41) Observation 0.73 0.0003 0.66 0.59-0.72
How many kids consumed sugary drinks from outside the snack program (e.g. vending, home, etc.) during the afterschool day? (0–3 scale: 0 None, 1 Few, 2 Some, 3 Many) 20 0.74 (0.78) Observation 0.70 0.0005 0.62 0.54-0.70
How many kids consumed food from outside the snack program during the afterschool day? (0–3 scale: 0 None, 1 Few, 2 Some, 3 Many) 20 1.06 (0.65) Observation 0.68 0.001 0.65 0.48-0.82
Was 100% juice served at snack? (Proportion) 15 0.29 (0.32) Observation 0.50 0.06 0.42 0.17-0.82
If 100% juice was served at snack, was it served in a container greater than 4oz? (Proportion) 15 0.25 (0.31) Observation 0.56 0.03 0.59 0.33-0.86
For the children who were served water, how much do you think they drank? (0–3 scale: 0 None, 1 Some, 2 Most, 3 All) 20 0.64 (0.36) Plate waste 0.56 0.01 0.49 0.39-0.60
Screen time
Did your program offer any recreational (i.e. internet, entertainment) computer time today? (Proportion) 20 0.39 (0.35) Observation 0.85 0.0001 0.60 0.46-0.72
Did your program show any broadcast or cable TV or movies today? (Proportion) 20 0.03 (0.10) Observation 0.68 0.0007 0.50 0.49-0.50
1. a. Criterion validity assessed in 20 programs during phase 1 and 15 programs during phase 2.
2. b. Pearson correlations for weekly OSNAP-OPAT data were based on 5 days of data in phase 1. In phase 2, data was collected on 4 days in 9 sites, 5 days in 3 sites, and 3 days in 3 sites.
3. c. Pearson correlations comparing one day of OSNAP-OPAT data to average weekly offerings via criterion measures were calculated for each day of the week and then averaged to get a validity estimate for one day of OSNAP-OPAT data.