1. Prevalence of venous reflux in the general population on duplex scanning: The Edinburgh Vein Study 
Christine J. Evans, MB, ChB, Paul L. Allan, FRCR, Amanda J. Lee, PhD, Andrew W. Bradbury, FRCSE, C.Vaughan Ruckley, FRCSE, ChM, F.Gerald R. Fowkes, FRCPE 
Journal of Vascular Surgery 
Volume 28, Issue 5, Pages (November 1998)
DOI: /S (98)
Copyright © 1998 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

2. Fig 1
Proportion of participants with reflux of 0.5 seconds or more duration in either leg at individual vein segments, by sex (adjusted for age). CFV, common femoral vein; SFV, superficial femoral vein; a.k. POP, above knee popliteal; b.k. POP, below knee popliteal; LSV, long saphenous vein; lower LSV, lower thigh LSV; SSV, short saphenous vein.
Journal of Vascular Surgery  , DOI: ( /S (98) )
Copyright © 1998 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

3. Fig 2
Proportion of participants with reflux of 0.5 seconds or more duration and reflux of more than 1.0 seconds duration in the lower thigh segment of the long saphenous vein in either leg, by age.
Journal of Vascular Surgery  , DOI: ( /S (98) )
Copyright © 1998 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

4. Fig. 3
Age-adjusted and sex-adjusted prevalence of reflux of 0.5 seconds or more duration in either leg, at individual vein segments, in participants with and without “venous disease.” CFV, common femoral vein; SFV, superficial femoral vein; a.k. POP, above knee popliteal; b.k. POP, below knee popliteal; LSV, long saphenous vein; lower LSV, lower thigh LSV; SSV, short saphenous vein.
Journal of Vascular Surgery  , DOI: ( /S (98) )
Copyright © 1998 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions