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.

Table 2 Surgical outcomes and postoperative courses before and after propensity score matching

Characteristics	Before matching				After matching
	EVLT	CS	t/χ2	P value	EVLT	CS	t/χ2	P value
Surgical time	61.73 ± 17.38	70.68 ± 19.71	6.627	0.000	62.21 ± 17.66	70.86 ± 19.63	5.294	0.000
Hospital day	4.57 ± 2.14	6.56 ± 2.84	11.1	0.000	4.52 ± 2.12	6.64 ± 2.95	9.436	0.000
Phlebitis	31	19	0.051	0.822	19	16	0.276	0.600
Local hematoma	18	7	8.712	0.034	4	3	5.348	0.593
Pain	149	68	130.00	0.272	104	51	25.777	0.000
Paresthesia	103	82	2.362	0.124	63	75	1.418	0.234
Wound infection	0	0	-	-	0	0		-
Deep venous thrombosis	0	0	-	-	0	0		-
Recurrence	149	68	8.433	0.004	92	57	11.506	0.001

EVLT: Endovenous laser treatment; CS: Conventional surgery.