Table 4.
Methodological quality (overall performance) for preoperative models
|
Model
|
Study participation (out of 8)
|
Measurements (out of 4)
|
Analysis (out of 8)
|
Total (out of 20)
|
| PNI | N/A | N/A | N/A | N/A |
| CCI | 6 | 4 | 5 | 14 |
| ACCI | 6 | 4 | 4.5 | 14.5 |
| GNRI | 6.5 | 3 | 4.5 | 14 |
| Cologne | 7 | 3 | 4 | 14 |
| Rotterdam | 7.5 | 4 | 6 | 17.5 |
| Philadelphia | 7.5 | 4 | 5 | 16.5 |
| Amsterdam | 8 | 3.5 | 7 | 18.5 |
| Original STS | 8 | 4 | 5.5 | 17.5 |
| Ferguson | 7.5 | 4 | 5 | 16.5 |
| NSQIP SRC | 7.5 | 3.5 | 6 | 16.5 |
| Takeuchi | 8 | 3 | 7 | 18 |
| PNI multivariate | 8 | 4 | 7 | 19 |
| Revised STS | 8 | 4 | 4.5 | 16.5 |
| PER | 7 | 4 | 4 | 15 |
| RAI-A | 7 | 4 | 6.5 | 17.5 |
| 5 Factor MFI | 6.5 | 3 | 6.5 | 16 |
| PPCS | 7 | 4 | 5.5 | 16.5 |
| JNCD | 8 | 4 | 6.5 | 18.5 |
| RAI-revised | 7 | 4 | 8 | 19 |
| RAI-revised (CC) | 8 | 4 | 6.5 | 18.5 |
CCI: Charlson comorbidity index; ACCI: Age-adjusted charlson comorbidity index; GNRI: Geriatric nutritional risk index; NSQIP SRC: National Surgical Quality Improvement Program Surgical Risk Calculator; RAI-A: Administrative risk analysis index; MFI: Modified frailty index; STS: Society of Thoracic Surgeons Oesophagectomy Composite Score; PNI: Prognostic nutritional index; PPCS: Predicting postoperative complications score; JNCD: Japanese National Clinical Database; PER: Perioperative esophagectomy risk score.