1. Prospective, randomized study of external jugular vein patch versus polytetrafluoroethylene patch during carotid endarterectomy: perioperative and long- term results 
Franco Grego, MD, Michelle Antonello, MD, Sandro Lepidi, MD, Stefano Bonvini, MD, Giovanni P Deriu, MD 
Journal of Vascular Surgery 
Volume 38, Issue 6, Pages (December 2003)
DOI: /S (03)

2. Fig 1
Survival-free rate for groups A (squares) and B (diamonds) at 6-month intervals (Kaplan-Meier method). Standard error is ≤8.5% at 60 months for each group. EJV, External jugular vein; PTFE, polytetrafluoroethylene.
Journal of Vascular Surgery  , DOI: ( /S (03) )

3. Fig 2
Relevant neurologic complication–free rate (RNCR) for groups A (squares) and B (diamonds) at 6-month intervals (Kaplan-Meier method). Standard error is ≤6.2% at 60 months for each group. EJV, External jugular vein; PTFE, polytetrafluoroethylene.
Journal of Vascular Surgery  , DOI: ( /S (03) )

4. Fig 3
Stroke-free rate for groups A (squares) and B (diamonds) at 6-month intervals (Kaplan-Meier method). Standard error is ≤7.1% at 60 months for each group. EJV, External jugular vein; PTFE, polytetrafluoroethylene.
Journal of Vascular Surgery  , DOI: ( /S (03) )

5. Fig 4
Freedom from significant recurrent stenosis (≥50%) for groups A (squares) and B (diamonds) at 6-month intervals (life table analysis). Standard error is ≤9.99% at 60 months for each group. EJV, External jugular vein; PTFE, polytetrafluoroethylene.
Journal of Vascular Surgery  , DOI: ( /S (03) )