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Comparison of test score before and after intervention
| Score | n | Mean±2SD | Mean difference±2SE | P |
|---|---|---|---|---|
| Pretest score | 265 | 3.698±1.703 | 1.7890±0.1434 | <0.001 |
| Posttest score | 265 | 5.487±1.811 |
Paired t-test. t, dF=12.475,264. SE: Standard error, SD: Standard deviation
