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Jadad quality assessment of the included studies
| Study | Year | Country | Study type | Randomization | Blinding | An account of all patients | Overall score |
|---|---|---|---|---|---|---|---|
| Robert et al12 | 2015 | France | Phase III | 2 | 2 | 1 | 5 |
| Weber et al13 | 2015 | USA | Phase III | 2 | 0 | 1 | 3 |
| Larkin et al10 | 2015 | USA | Phase III | 2 | 2 | 1 | 5 |
| Borghaei et al8 | 2015 | USA | Phase III | 2 | 0 | 1 | 3 |
| Brahmer et al9 | 2015 | USA | Phase III | 2 | 0 | 1 | 3 |
| Motzer et al11 | 2015 | USA | Phase III | 2 | 0 | 1 | 3 |
