In the article “Cognitive impairment in hemodialysis patients is common” by A.M. Murray et al. (Neurology 2006;67:216–223), there are errors in table 1 (p. 217). For items 2 and 3, there should be no “≤” in either, so both 2 and 3 should read “mean in 1 domain” at the end. The table should read as follows:
Table 1 Cognitive impairment algorithm
Normal: scored ≤1.49 SD below the age-adjusted mean on all tests in all domains*
Mild cognitive impairment: scored 1.50 to 1.99 SD below the age-adjusted mean in 1 domain
Moderate cognitive impairment: scored 1.50 to 1.99 SD below the age-adjusted mean on one or more tests in >1 domain, or ≥2.00 SD below the mean in 1 domain
Severe cognitive impairment†: scored ≥2.00 SD below the age-adjusted mean on at least one test in ≥2 domains
*The cognitive domains of memory, executive function, and language.
†Classification as severe cognitive impairment requires results of at least one test in each of two or more of the three domains.
The authors regret the error.
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