Table 2.

Diameter of the great saphenous vein (GSV) preoperatively and at follow-up

	Preoperative, mm	Follow-up, mm	P
GSV 1	6.4±1.4	4.8±1.7	0.001
GSV 2	4.6±1.2	4.2±1.1	0.085
GSV 3	4.7±1.5	4.1±1.2	0.013
GSV 4	3.7±1.0	3.6±1.3	0.786

Data presented as mean ± SD. GSV 1 = groin to mid-thigh; GSV 2 = mid-thigh to knee; GSV 3 = knee to mid-calf; GSV 4 = mid-calf to ankle