Endovenous laser treatment vs conventional surgery for great saphenous vein varicosities: A propensity score matching analysis

Table 1 Comparison of demographic and clinicopathological characteristics before and after propensity score matching

Variables	Overall population (n = 772)	Before matching				After matching
		EVLT (n = 467)	CS (n = 305)	t/χ2	P value	EVLT (n = 261)	CS (n = 261)	t/χ2	P value
Sex, n (%)				2.695	0.101			0.284	0.594
Female	324 (41.97)	207 (44.33)	117 (38.36)			111 (42.53)	105 (40.23)
Male	448 (58.03)	260 (55.67)	188 (61.64)			150 (57.47)	156 (59.77)
Age (yr)		58.09 ± 9.62	56.04 ± 10.48	-2.784	0.006	56.89 ± 9.517	56.64 ± 10.344	0.286	0.775
Duration (mo)		84.80 ± 34.42	71.52 ± 40.14	-4.902	0.000	78.97 ± 36.72	77.72 ± 37.88	0.384	0.701
Smoking, n (%)	286 (37.05)	158 (33.83)	128 (41.97)	5.234	0.022	104 (39.85)	99 (37.93)	0.202	0.653
Diabetes, n (%)	74 (9.59)	41 (8.78)	33 (10.82)	8.655	0.003	28 (10.73)	28 (10.73)	0.000	1.000
Family history, n (%)	158 (20.47)	78 (16.70)	80 (26.23)	10.288	0.001	66 (25.29)	61 (23.37)	0.260	0.610
Compression therapy, n (%)	204 (26.42)	114 (24.41)	90 (29.51)	2.465	0.116	72 (27.59)	67 (25.67)	0.245	0.621
C class, n (%)				1.910	0.385			1.627	0.443
C2	121 (15.67)	80 (17.13)	41 (13.44)			43 (16.48)	34 (13.03)
C3	406 (52.59)	242 (51.82)	164 (53.77)			132 (50.57)	144 (55.17)
C4	245 (31.74)	145 (31.05)	100 (32.79)			86 (32.95)	83 (31.80)
Legs, n (%)				2.851	0.240			2.753	0.252
Left	298 (38.60)	181 (38.76)	117 (38.36)			98 (37.55)	103 (39.46)
Right	262 (33.94)	95 (20.34)	167 (54.75)			98 (37.55)	81 (31.03)
Both	212 (27.46)	93 (19.91)	119 (39.02)			65 (24.90)	77 (29.50)

CS: Conventional surgery; EVLT: Endovenous laser treatment.