The Treviso dementia (TREDEM) study: a biomedical, neuroradiological, neuropsychological and social investigation on dementia in the North-east of Italy
The incidence of dementia increases exponentially with age but knowledge of real disease-modifying interventions is still limited. Objectives: To describe the study design and methods of a large prospective cohort study aimed at exploring the complex underlying relationships existing among cognition,
frailty, and health-related events in older persons with cognitive impairment. Design: Prospective cohort study of a representative population of outpatients attending the Treviso Cognitive Impairment Center between 2000 and 2010. Setting: The TREVISO DEMENTIA (TREDEM) Study conducted in Treviso, Italy. Participants: 490 men and 874 women, mean age 79.1 \ub1 7.8 years (range 40.2\u2013100 years). Measurements: Physiological data, biochemical parameters, clinical conditions, neuroradiological parameters (e.g., brain atrophy and cerebral vascular lesions identified by computerized tomography scans), neuropsychological assessment, and physical function markers were measured at baseline. Patients were followed-up to 10 years. Results: The final sample included in the study was predominantly composed of women and characterized by an initial physical function impairment and increased vascular risk profile. Cognitive function of the sample population showed moderate cognitive impairment (Mini Mental State Examination 20.2 \ub1 6.3; Clinical Dementia Rating 1.2 \ub1 0.7), and a
prevalence of vascular dementia of 26.9%. Cortical, subcortical and hippocampus atrophy were all significantly correlated with age and cognitive function. Conclusion: Results obtained from the preliminary analyses
conducted in the TREDEM study suggest that the database will support the accomplishment of important goals in understanding the nature of cognitive frailty and neurodegenerative diseases
