Figure 1.

Frequency of true positive primary nephrotic syndrome diagnoses, by biopsy review status. (A) n=83 patients with true positive primary nephrotic syndrome with biopsies reviewed by chart validation. Other diagnoses consisted of one of each: congenital nephrotic syndrome, lipoprotein glomerulopathy, and membranoproliferative glomerulonephritis. (B) n=28 patients with true positive primary nephrotic syndrome, where biopsies were not performed or unable to be reviewed by chart validation. Other diagnoses consisted of three patients with congenital nephrotic syndrome. MCD, minimal change disease; MN, membranous nephropathy; SSNS, steroid sensitive nephrotic syndrome; SRNS, steroid resistant nephrotic syndrome; NS, nephrotic syndrome.