Table 2.
Level of evidence and quality assessment of the selected studies.
| Authors, Publication Year | Total Patients | Accurate Description of Surgical Procedure | Accurate Description of Chemotherapy Treatment | Consecutive | Newcastle−Ottawa Score | |||
|---|---|---|---|---|---|---|---|---|
| Selection Maximum **** |
Comparability Maximum * |
Outcome Maximum *** |
Score (Out of 8) |
|||||
| Frigerio [24], 2017 | 535 | Yes | Yes | Yes | *** | - | *** | 6 |
| Crippa [25], 2016 | 127 | Yes | Yes | Yes | *** | - | *** | 6 |
| Tanaka [26], 2019 | 101 | Yes | Yes | Yes | **** | * | *** | 8 |
| Kandel [27], 2018 | 42 | Yes | No | Yes | **** | * | *** | 8 |
| Wright [28], 2016 | 1147 | Yes | Yes | Yes | **** | * | *** | 8 |
| Byun [29], 2019 | 337 | No | Yes | Yes | **** | * | *** | 8 |
Newcastle−Ottawa Quality Assessment Scale for Cohort Study. (*: the study met the criteria for a domain of the Newcastle-Ottawa Scale; -: the criteria were not met).