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Sensitivity Analysis. Exclusion of the RCT Study and the Study with a Score of 4 on the Confounding Risk of Bias Items. Separately by Outcome. Standardised Mean Difference (SMD) with 95% Confidence Interval (CI).
| 95% CI | |||||
| Outcome | Studies excluded | Number of studies k | Mean SMD | Lower | Upper |
| 5 | 0.11 | 0.05 | 0.16 | ||
| Reading | RCT | 4 | 0.10 | 0.03 | 0.16 |
| Confounding score of 4 | 4 | 0.11 | 0.05 | 0.17 | |
| 4 | ‐0.03 | ‐0.22 | 0.16 | ||
| Mathematics | Confounding score of 4 | 3 | 0.06 | ‐0.08 | 0.19 |
