Table 2. Estimates of BCSS and OS and pairwise comparisons according to tumor size and lymph node status.

Tumor size/nodal status	No. of patients	BCSS				OS
		No. of events	Overall Pa	Pairwise	Adjusted Pb	No. of events	Overall Pa	Pairwise	Adjusted Pb
Total	10771	337	<0.001	N0 v N1	0.133	547	<0.001	N0 v N1	0.011
N0	7481	115		N0 v N2	0.654	234		N0 v N2	0.785
N1	2355	130		N0 v N3	0.377	177		N0 v N3	0.999
N2	562	38		N1 v N2	1.000	63		N1 v N2	0.916
N3	373	54		N1 v N3	0.002	73		N1 v N3	0.054
				N2 v N3	0.053			N2 v N3	0.729
T1			<0.001	N0 v N1	0.984		<0.001	N0 v N1	0.114
Total	5292	76		N0 v N2	0.944	151		N0 v N2	0.999
N0	4343	37		N0 v N3	0.865	93		N0 v N3	1.000
N1	747	25		N1 v N2	0.998	35		N1 v N2	0.874
N2	130	6		N1 v N3	0.610	12		N1 v N3	0.836
N3	72	8		N2 v N3	0.592	11		N2 v N3	1.000
T2			<0.001	N0 v N1	0.138		<0.001	N0 v N1	0.248
Total	4640	178		N0 v N2	0.678	280		N0 v N2	0.963
N0	2825	62		N0 v N3	1.000	112		N0 v N3	1.000
N1	1294	75		N1 v N2	1.000	102		N1 v N2	0.986
N2	327	26		N1 v N3	0.542	39		N1 v N3	0.874
N3	194	15		N2 v N3	0.829	27		N2 v N3	0.999
T3			<0.001	N0 v N1	0.841		<0.001	N0 v N1	0.854
Total	839	83		N0 v N2	1.000	116		N0 v N2	0.931
N0	313	16		N0 v N3	0.987	29		N0 v N3	0.993
N1	314	30		N1 v N2	0.993	40		N1 v N2	1.000
N2	105	6		N1 v N3	0.190	12		N1 v N3	0.375
N3	107	31		N2 v N3	0.987	35		N2 v N3	0.670

^aOverall P was calculated using the Kaplan-Meier method and the log-rank test, and bold type indicates significance.

^bAdjusted P was calculated using Sidak pairwise comparisons, and bold type indicates significance.