Table 1.

No. of Examined Nodes by T and N Stage

Stage	Patients		Nodes Examined
	No.	%	Mean	SD	Median	IQR
T stage (all patients)
1	16,575	12.6	9.6	8.5	7	4-13
2	20,453	15.5	11.7	8.5	10	6-15
3	78,127	59.2	13.8	9.4	12	7-18
4	16,798	12.7	13.5	9.4	12	7-17
T stage (N0 patients)
1	14,944	17.6	9.5	8.4	7	4-12
2	16,684	19.7	11.6	8.5	10	6-15
3	45,201	53.2	13.4	9.3	11	7-17
4	8,095	9.5	12.8	9.3	11	6-16
N stage
0	84,924	64.4	12.3	9.1	10	6-16
1	31,377	23.8	12.9	9.0	11	7-17
2	15,652	11.9	16.2	9.7	14	10-20

Abbreviations: SD, standard deviation; IQR, interquartile range.