Regression-Based Normative Formulae for the Repeatable Battery for the Assessment of Neuropsychological Status for Older Adults.

The Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) has become a popular cognitive screening instrument, particularly in elderly patients. Prior studies presented lookup tables for RBANS normative data based on age, gender, education, and race using a group of 718 community-dwelling older adults. However, regression-based normative formulae that simultaneously correct for all demographic variables may be more sensitive for detecting late life cognitive decline. Using data from the prior studies, linear regression was used to generate such formulae in the Indexes and subtests of the RBANS. Results indicated that ∼11% of the variance of Index scores was accounted for by these demographic variables, and 13% of variance in subtest scores. Although some differences were present between the lookup and regression-based norms, it is expected that these current results will present more accurate demographic corrections that allow clinicians and researchers to better interpret individual performances on the RBANS.