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Mean scores of groups’ skills before the experiment (pretest of skills)
| Group | No. | Mean Score | Significant differences | |
|---|---|---|---|---|
| Pretest of skills | Control | 15 | 1.32±3.90 | 0.135 |
| Intervention | 15 | 1.68±3.05 | ||
| Posttest of skills | Control | 15 | 1.6±5.33 | 0.042 |
| Intervention | 15 | 1.7±6.13 |
