Test-retest reliability of the dementia rating scale-2: alternate form.

The purpose of this study was to examine the test-retest reliability of the newly developed Dementia Rating Scale-2: Alternate Form (DRS-2:AF) in a community-dwelling sample of older adults. Participants were administered the DRS-2:AF during two separate testing sessions; the interval between sessions was between 12 and 28 days. The stability coefficient for the Total Score was quite high (0.93), and reliability coefficients for the subscale scores ranged from adequate to high. This project provides evidence for the test-retest reliability of the DRS-2:AF. Given the need for cognitive status measures with equivalent forms, the DRS-2:AF is recommended as a reliable tool in the assessment of dementia. Copyright (c) 2005 S. Karger AG, Basel.