Table 2 Results of the comparison between the PNI-positive and PNI-negative groups.

	PNI (+) N:18	PNI (–) N:7	P
Sex (female)	9 (50%)	6 (85%)	0.17
Age	64.6 ± 15.8	71 ± 14.2	0.42
LEED	85.1 ± 2.0	85 ± 3.2	0.98
Length of treated vein	40.8 ± 1.0	39.4 ± 1.63	0.49
Distance to saphenous nerve at point 4	13.0 ± 1.02	13.4 ± 1.64	0.86
Varicosectomy	16 (88%)	2 (28%)	<0.01
Anterior	11	1	0.03
Posterior	6	1	0.34
Number of stab and avulsion wound	3.6 ± 2.0	1.5 ± 0.7	0.26

Varicosectomy was a factor that induced PNI.

Anterior: varicosectomy at the anterior site to the GSV trunk.

Posterior: varicosectomy at the posterior site to the GSV trunk.

PNI: peripheral nerve injury; LEED: linear endovenous energy density; GSV: great saphenous vein