Premium
Rate of Progression and Prognostic Factors in Alzheimer's Disease: A Prospective Study
Author(s) -
Lucca Ugo,
Comelli Mario,
Tettamanti Mauro,
Tiraboschi Pietro,
Spagnoli Alberto
Publication year - 1993
Publication title -
journal of the american geriatrics society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.992
H-Index - 232
eISSN - 1532-5415
pISSN - 0002-8614
DOI - 10.1111/j.1532-5415.1993.tb05947.x
Subject(s) - medicine , disease , prospective cohort study , alzheimer's disease , gerontology , intensive care medicine
Objective: To study rate of progression and correlates of cognitive and functional/behavioral deterioration in Alzheimer patients. Design: A 1‐year multicenter prospective study. Setting: Outpatients and inpatients at geriatric institutions. Patients: Fifty‐six patients with a clinical diagnosis of Alzheimer's disease according to DSM‐III criteria of Primary Degenerative Dementia. Main Outcome Measures: Blessed Dementia Scale (BDS) and Blessed Information‐Memory‐Concentration test (BIMC) measured at baseline, third, sixth, and twelfth month. Results: The mean annual (±SD) rate of progression of our sample was 3.5 (±3.7) points on the BDS and 2.6 (±4.9) on the BIMC, with a wide range of variability. The level of cognitive impairment (BIMC score) at baseline predicted functional and behavioral deterioration: the better the initial BIMC score, the less the rate of negative change of BDS ( r = 0.37, P = 0.006). Furthermore, the younger the patients at the disease onset, the faster the progression of cognitive impairment ( r = 0.48, P = 0.0003), with men having a slower rate of progression ( P = 0.004) than women. Conclusions: The present study confirms previous findings showing a wide individual variability in rate of progression of cognitive and functional/behavioral impairment as assessed by BIMC and BDS. The cognitive profile may predict the clinical evolution better than the functional and behavioral status, with patients with an earlier onset and women having a faster deterioration.