In absence of biological markers, cognitive screening tests are used to detect the earliest stages of dementia. The objective of this study was to determine the psychometric properties of a new screening battery to detect patients with dementia of the Alzheimer type (DAT): the 7 minutes test (7 MT). A sample of 193 successive referrals (subdivided in eight diagnostic categories) to two Memory Clinics (Academisch Ziekenhuis Maastricht and VU Medisch Centrum Amsterdam) were recruited for further investigation of the psychometric properties of the 7 MT. The data of the current study indicate that the sensitivity of the 7 MT in differentiating DAT is 94% with a specificity of 79% (subjects with no dementia). Positive Predictive Values for detecting dementia and DAT were 77% and 73% respectively, with a Negative Predictive Value of 95% and 96% (no dementia). The battery was also sensitive (91%) to patients with mild DAT (MMSE>=21). Neither education, nor sex, or depression had a significant influence on the test performance. Age had limited influence on the test results of the 7 MT. In line with the findings of Solomon and colleagues the 7 MT appears highly sensitive to DAT and may be useful in screening procedures.
|Number of pages||7|
|Journal||Tijdschrift voor Gerontologie en Geriatrie|
|Publication status||Published - 1 Jun 2004|