Table 4.

Characteristics of surgical and nonsurgical patients before and after propensity score matching.

	Before PSM				After PSM
	Level	Surgery	Nonesurgery	p	Nonesurgery	p
n		21	42		21
Age (mean (SD))		53(16.29)	62.62(13.5)	0.016	61.38(12.48)	0.069
Size (mean (SD))		76.33(68.56)	77.74(47.71)	0.925	68.52(38.28)	0.651
Sex (%)	Female	14(66.7%)	14(33.3%)	0.025	9(42.9%)	0.215
	Male	7(33.3%)	28(66.7%)		12(57.1%)
Stage (%)	Localized	17(81%)	16(38.1%)	0.002	16(76.2%)	1
	Regional	4(19%)	13(31%)		5(23.8%)
	Distant	0	13(31%)		0