Table 3. Classroom Activity by Grade, Size, and Access to Physical Activity, Move-to-Improve, New York City Schools, 2010.
| Percentage of Classrooms Where Activity Was Observed | All Classrooms (N = 144) | Trained Classrooms (n = 72) | Untrained Classrooms (n = 72) | P Value |
|---|---|---|---|---|
|
| ||||
| Mean (SD) | ||||
| Classrooms observed | 109 (75.7) | 71 (98.6) | 38 (52.7) | <.001 |
| Activities observed | 2.2 (2.3) | 3.3 (2.2) | 1.2 (1.8) | <.001 |
| Length of total activity time, min | 5.9 (6.7) | 9.5 (7.1) | 2.4 (3.8) | <.001 |
| Grade | ||||
| Kindergarten | 8.8 (7.7) | 14.1 (6.6) | 3.8 (4.9) | <.001 |
| First | 6.3 (6.4) | 9.0 (6.4) | 2.3 (3.7) | <.001 |
| Second | 4.6 (6.3) | 8.2 (7.8) | 1.7 (2.2) | .001 |
| Third | 4.2 (5.9) | 6.8 (6.5) | 1.9 (4.2) | .016 |
| Classroom size | ||||
| <20 students | 7.2 (7.2) | 12.3 (7.0) | 3.1 (4.2) | <.001 |
| 20–25 students | 6.1 (7.0) | 9.5 (7.6) | 2.5 (3.9) | <.001 |
| 26–30 students | 3.2 (3.4) | 5.5 (2.9) | 0.5 (1.1) | <.001 |
| Access to physical activity, min | ||||
| Classrooms with PE class (n = 132) | 5.9 (6.7) | 9.5 (7.1) | 2.4 (3.9) | <.001 |
| Classrooms without PE class (n = 12) | 6.5 (7.5) | 9.6 (8.6) | 2.1 (2.0) | .05 |
| Classrooms with recess (n = 128) | 5.8 (6.5) | 9.1 (6.9) | 2.5 (4.0) | <.001 |
| Classrooms without recess (n = 16) | 7.0 (8.6) | 12.6 (8.9) | 1.4 (2.2) | .004 |
Abbreviation: PE, physical education.