Studies have shown the influence of schooling on performance in the Dementia
Rating Scale (DRS), suggesting that a single cut-off score is not appropriate
for all groups of elderly people.ObjectivesTo verify the influence of schooling on the DRS in a Brazilian elderly
population.MethodsThe DRS was applied to 118 cognitively healthy controls and to 97 patients
with mild probable Alzheimer’s disease (AD). In order to analyze the
influence of education, patients and controls were divided into four groups
of schooling (GRSC): GRSC 1 with 1 to 4 years of schooling, GRSC 2 with 5 to
8 years of schooling, GRSC 3 with 9 to 11 years of schooling, and GRSC 4
with more than 11 years of schooling.ResultsIn the intragroup analysis, the performance of controls within each schooling
group was compared, revealing a significant difference on total score and
the subscales Attention, I/P and Conceptualization. The same procedure was
used for the AD patients and a significant difference was observed for total
score and the subscales Attention, Construction, Conceptualization and
Memory. In the intergroup analysis, the results on total DRS and for the
I/P, Conceptualization and Memory subscales showed significant differences
in GRSC 1, 2, 3 and 4. The Attention subscale showed differences in GRSC 3
and 4, and on the Construction subscale in GRSC 1 and 4.ConclusionsThe results highlight the importance of norms for the DRS in the Brazilian
population that take into account the effects of schooling on the scores of
this scale.