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| Procedural intervention | Training intervention | |
|---|---|---|
| (n = 7) | (n = 15) | |
| Pre‐ and post‐intervention design | 7 | 7 |
| Use of control group | 0 | 3 |
| Sample size >100 | 7 | 8 |
| Long term follow up* | 1 | 4 |
| Clear/comprehensive report of findings | 7 | 11 |
| Objective evaluation of findings | 7 | 4 |
*Other than immediate post‐intervention evaluation.
