Table 2.

Assignment of factors

Factor	Assignment
Age (years)	≥60=1, <60=0
Diabetes mellitus	Yes =1, No =0
TNM staging	Phase I-II =0, phase III-IV =1
Chemotherapy regimen	Single =1, combined =0
Chemotherapy cycle	≥2=1, <2=0
Post-chemotherapy albumin (g/L)	≥30=0, <30=1
Pre-chemotherapy KPS	≥80=0, <80=1
operation time	≥180 min =1, <180 min =0
Risk score	≥0.163=1, <0.163=0
Infection	Infected =1, uninfected =0

Note: TNM: Tumor Node Metastasis.