Systematic Reviews
Copyright ©The Author(s) 2023.
World J Gastrointest Surg. Mar 27, 2023; 15(3): 450-470
Published online Mar 27, 2023. doi: 10.4240/wjgs.v15.i3.450
Figure 1
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Figure 1 PRISMA 2020 flow diagram.
Figure 2
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Figure 2 Reference key for list of abbreviated model names.
Figure 3
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Figure 3 External validation status of pre-operative models. CCI: Charlson comorbidity index; ACCI: Age-adjusted 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.
Figure 4
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Figure 4 Weighted mean of c-statistics for each major outcome. CCI: Charlson comorbidity index; ROC: Receiver operating characteristic; ACCI: Age-adjusted comorbidity index; GNRI: Geriatric nutritional risk; 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.