Fig. 2

Study flow chart

*Other quality issues include index date prior to database entry, indeterminate sex, aged < 18 years-old, end of follow-up prior to study entry. ^ n = 4 individuals with incident colorectal cancer excluded as no matches were not found. ** matched controls belonging to matched sets where the exposed individual had a prior diagnosis of AKI. AKI = acute kidney injury; CPRD/HES-APC = Clinical Practice Research Datalink/Hospital Episode Statistics Admitted Patient Care; ESRD = End Stage Renal Disease