To assess the diagnostic yield of the main cognitive screening tests in Primary Care: the Mini Mental State Examination (MMSE), the Clock Drawing Test (CDT), the Verbal Fluency Test (VFT) and the Informant Questionnaire test (IQ).
18 24–26 Intellectual capacity was based on four main intellectual and cognitive tests, measuring verbal, logical-inductive, spatial and technical and mechanical ability.
Intelligence quotient (IQ) was based on four main intellectual and cognitive tests, measuring verbal, logical-inductive, spatial, and technical and mechanical ability [ 28, 29].
In accordance with international guidance (23), the main cognitive outcome was a test of memory, i.e., a 16-item word list from the California Verbal Learning Test (CVLT) (24).
The main aim of cognitive testing was to ensure that the questions and scales were clear and unambiguous.
Main outcome measures Cognitive testing was carried out at two year intervals up to three times using the telephone interview for cognitive status, immediate and delayed recall trials of the east Boston memory test, delayed recall trial of the telephone interview for cognitive status 10 word list, and a category fluency test.
All participants showed values into a normal range in a battery of tests covering the main cognitive domains.
Sixteen neuropsychological tests examining the main cognitive domains (intelligence, memory, attention and concentration, executive functions and abstract reasoning) were administered by a neuropsychologist.
Participants underwent the same neuropsychological test battery both at baseline and during follow-up examination, covering the main cognitive domains.
There was a significant main effect (F1,320.6 = 7.68, p =.006) and a differential effect between cognitive tests (F5,228.0 = 3.16, p =.009), but no effects on change in cognitive test scores over time.
