Figure 3From: Programmatic variation in home hemodialysis in Canada: results from a nationwide survey of practice patterns Programmatic use of buttonhole cannulation. This graph depicts the number of programs having specific proportions of their AVF patients who use buttonhole cannulation (ie. 8 programs have all of their AVF patients using buttonholes, while 1 program has <20% of its AVF patients using buttonholes).Back to article page