A novel pN3 gastric cancer staging system with superior prognostic utility based upon the examination of over 31 lymph nodes: a propensity score-matching analysis

Table 3 Comparison of the performance of the AJCC-TNM staging system and the novel TNM staging system

	Liner trend χ²	Likelihood ratio χ²	AIC	BIC
AJCC-TNM	85.05 (P < 0.001)^*	81.02 (P < 0.001)^#	17,089.70	17,094.87
nTNM	103.63 (P < 0.001)^*	108.67 (P < 0.001)^#	17,048.93	17,054.1

*Comparison of overall survival by liner trend χ2 test among different stages
^#Comparison of overall survival by likelihood ratio χ2 test among different stages

ISSN: 1471-230X