Standardizing the classification of gastric cancer patients with limited and adequate number of retrieved lymph nodes: an externally validated approach using real-world data

Table 4 Performance of the 8th AJCC TNM classification to the proposed pTN’M classification in the Chinese and SEER datasets

Statistical parameters	Chinese dataset		SEER dataset
Statistical parameters	8th AJCC pTNM classification	Proposed pTN’M classification	8th AJCC pTNM classification	Proposed pTN’M classification
AIC	55,324	55,207	84,730	84,568
Log-rank χ²	2139	2298	1926	2122
Linear trend χ²	1531	1630	1649	1798
Likelihood ratio χ²	2135	2252	1863	2025

AIC Akaike information criterion, pTNM pathological tumor-node-metastasis classification, N’ modified nodal classification, AJCC American Joint Commission on Cancer

ISSN: 2054-9369