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. Author manuscript; available in PMC: 2021 Sep 30.

Published in final edited form as: Ann Surg Oncol. 2011 Dec 1;19(5):1663–1669. doi: 10.1245/s10434-011-2156-7

TABLE 5.

Case matching

Variable	Number (%)		P value
	Initial stage III (N = 35)	Case matched group (N = 35)
Age	62.3 ± 9.9^a	69.5 ± 9.2^a	.003
Gender			1
Male	18 (51)	18 (51)
Female	17 (48)	17 (49)
T stage			.028
T0	2 (6)	0
T1	4 (11)	0
T2	3 (9)	9 (26)
T3	26 (74)	26 (74)
N stage			1
N0	29 (83)	29 (82.9)
N1	6 (17)	6 (17.1)
Differentiation			.22
Well	1 (3)	5 (14)
Moderately	26 (74)	13 (37)
Poorly	3 (9)	12 (34)
Unknown	5 (14)	5 (14)
Margin			.312
R0	29 (83)	29 (83)
R1	6 (17)	6 (17)
Location			.364
Head	23 (66)	31 (89)
Neck	0	1 (3)
Body	2 (6)	1 (3)
Tail	10 (29)	2 (6)