Spanish version of the Bayer Activities of Daily Living scale in mild cognitive impairment and mild Alzheimer disease: discriminant and concurrent validity.
OBJECTIVE
To test the discriminant and concurrent validity of the Spanish version of the Bayer Activities of Daily Living scale (B-ADL) in mild cognitive impairment (MCI) and mild Alzheimer disease (AD).


METHODS
The B-ADL scale, the Blessed Dementia Rating Scale (BDRS), and the Interview for Deterioration in Daily Living in Dementia (IDDD) were administered to 277 elderly Spanish patients (78 MCI and 199 AD). Correlations between scales were performed, and ROC curves were plotted.


RESULTS
In MCI and mild AD discrimination, an area under the ROC curve of 0.84 was found; a cut-off point of 3.3 was proposed with values of 0.81 for sensitivity and 0.72 for specificity. The B-ADL correlated positively to both the BDRS (r = 0.7) and the IDDD (r = 0.8).


CONCLUSIONS
The B-ADL is a valid and sensitive scale that can be used to discriminate mild AD from MCI.
Sánchez-Benavides
G
G
Group of Behavioral Neurology, Neuropsychopharmacology Program, Institut Municipal d'Investigació Mèdica, ES-08003 Barcelona, Spain.
Manero
R M
RM
Quiñones-Ubeda
S
S
de Sola
S
S
Quintana
M
M
Peña-Casanova
J
J
D000203:Activities of Daily Living / Q000523:psychology*; D000368:Aged; D000544:Alzheimer Disease / Q000175:diagnosis / Q000523:psychology*; D003071:Cognition / Q000502:physiology; D003072:Cognition Disorders / Q000175:diagnosis / Q000523:psychology*; D003627:Data Interpretation, Statistical; D003704:Dementia / Q000175:diagnosis / Q000523:psychology; D005260:Female; D006801:Humans; D007802:Language; D008297:Male; D012372:ROC Curve; D015203:Reproducibility of Results; D013030:Spain