Cognitive Impairment in Peritoneal Dialysis Patients

. Author manuscript; available in PMC: 2012 Apr 1.

Published in final edited form as: Am J Kidney Dis. 2011 Feb 4;57(4):612–620. doi: 10.1053/j.ajkd.2010.11.026

Normal cognitive function:Scored ≤ 1.49 SD below the age-adjusted mean on all tests in all
domains.^A

Mild cognitive impairment: Scored 1.50-1.99 SD below the age-adjusted mean in 1 domain.

Moderate cognitive impairment: Scored 1.50-1.99 SD below the age-adjusted mean in ≥ 2 domains, or ≥ 2.00 SD below the mean in 1 domain.

Severe cognitive impairment ^b: Scored ≥ 2.00 SD below the below the age-adjusted mean in ≥ 2 domains.

SD, standard deviation.

The cognitive domains of memory, language, and executive function.

Classification requires results of at least 1 test in each of at least 2 of the 3 domains.