Concurrent validity of the GMS-AGECAT (A3) package in a Danish nursing home population.
OBJECTIVE
To validate the Danish version of the GMS-AGECAT (A3), the Standardized Mini Mental State Examination (SMMSE) and the Geriatric Depression Scale-15 (GDS-15) by comparing them to clinical ICD-10 criteria in a Danish nursing home population.


METHODS
With a participation of 91%, the study included 100 residents. All residents were interviewed with the GMS-AGECAT (A3), SMMSE and GDS-15 by an MD and then blindly diagnosed by a consultant geriatric psychiatrist. All residents approached for an interview were included, also those who were not able to communicate (the non-accessibles).


RESULTS
The prevalence of clinical psychiatric ICD-10 main diagnoses was 56%. The non-accessibles had significantly higher psychiatric morbidity and lower ADL scores (modified Barthel ADL index) compared to those who were able to communicate. With the non-accessibles (N = 100) included, the optimal screening and diagnostic cutpoint for the GMS-AGECAT organic diagnoses was 2/3, with 96% sensitivity, 73% specificity, 77% predictive value of a positive test and 95% predictive value of a negative test. The SMMSE and GDS-15 had better screening properties compared to the GMS-AGECAT but only 60% of the residents were able to complete the SMMSE and 78% were able to complete the GDS-15.


CONCLUSIONS
The Danish version of the GMS-AGECAT has relevant diagnostic and screening properties for organic disorders in Danish nursing home populations.
Sørensen
L
L
Dept of Psychiatric Demography, Psychiatric Hospital in Aarhus, Risskov, Denmark.
Foldspang
A
A
Gulmann
N C
NC
Juul-Nielsen
S
S
Mehlsen
M
M
Munk-Jørgensen
P
P
D000368:Aged; D000369:Aged, 80 and over; D016009:Chi-Square Distribution; D003072:Cognition Disorders / Q000175:diagnosis; D003144:Communication Barriers; D016001:Confidence Intervals; D003718:Denmark; D003863:Depression / Q000175:diagnosis*; D006233:Persons with Disabilities; D005260:Female; D015577:Geriatric Assessment; D006707:Homes for the Aged; D006801:Humans; D008297:Male; D008609:Mental Status Schedule / Q000592:standards*; D019965:Neurocognitive Disorders / Q000175:diagnosis*; D009735:Nursing Homes; D011594:Psychometrics / Q000592:standards*; D012372:ROC Curve; D012016:Reference Values; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D016037:Single-Blind Method