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Regression results: dependent is classroom behavior, grade 5 (n = 4896)
| Independent variable | Regression Coefficient | SE of regression coefficient | 95% Confidence Interval for regression coefficient | p-value for regression coefficient |
| Classroom Behavior, Grade 3 | 0.566 | 0.022 | 0.523 to 0.610 | <0.0005 |
| 3, Not 5 Martial Arts | -0.014 | 0.035 | -0.083 to 0.055 | 0.685 |
| 5, Not 3 Martial Arts | -0.004 | 0.049 | -0.100 to 0.092 | 0.938 |
| Both 3, 5 Martial Arts | 0.051 | 0.078 | -0.102 to 0.204 | 0.516 |
