Association of vascular access flow with short-term and long-term mortality in chronic haemodialysis patients: a retrospective cohort study.

However, after adjustment for potential confounders, the HR for vascular mortality became borderline significant in the patients with a lower Qa level compared with those with a higher Qa level (aHR 1.69; 95% CI 0.98 to 2.9; p=0.059; table 3 ).

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