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| Methods | An assessment in a cohort of RCTs conducted by Southwest Oncology Group (SWOG) between 1960 and 2003 |
| Data | 117 RCTs with matching protocols available for 105 RCTs involving 129 comparisons (n=58,908 patients) |
| Comparisons | Comparison of protocols to published reports |
| Outcomes | Elements addressing assessment of harms |
| Notes | Definition of protocol not stated |
