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Secondary patency probability of arteriovenous fistulae (AVFs) and arteriovenous grafts (AVGs) stratified by age group. The patency rate of AVF in those aged ≤60 years was statistically better than those aged >60 years (P = .040), but there was no difference when comparing AVF in those aged >60 years and AVG in those less than or greater than 60 years.
