Aalten, P. et al. (2003). Behavioral problems in dementia: a factor analysis of the neuropsychiatric inventory. Dementia and Geriatric Cognitive Disorders, 15, 99–105.
Aalten, P. et al. (2008). Consistency of neuropsychiatric syndromes across dementias: results from the European Alzheimer Disease Consortium. Part II. Dementia and Geriatric Cognitive Disorders, 25, 1–8.
Avorn, J. and Gurwitz, J. H. (1995). Drug use in the nursing home. Annals of Internal Medicine, 123, 195–204.
Ballard, C. (2007). Agitation and psychosis in dementia. American Journal of Geriatric Psychiatry, 15, 913–917.
Binstock, R. H. (1985). The oldest old: a fresh perspective or compassionate ageism revisited? The Milbank Memorial Fund Quarterly. Health and Society, 63, 420–451.
Brown, M. N., Lapane, K. L. and Luisi, A. F. (2002). The management of depression in older nursing home residents. Journal of the American Geriatrics Society, 50, 69–76.
California Workgroup on Guidelines for Alzheimer's Disease Management (2008). Guidelines for Alzheimer's Disease Management. Chicago: Alzheimer's Association.
Carlesimo, G. A., Caltagirone, C. and Gainotti, G. (1996). The Mental Deterioration Battery: normative data, diagnostic reliability and qualitative analyses of cognitive impairment. The Group for the Standardization of the Mental Deterioration Battery. European Neurology, 36, 378–384.
Colombo, M., Vitali, S., Cairati, M., Vaccaro, R., Andreoni, G. and Guaita, A. (2007). Behavioral and psychotic symptoms of dementia (BPSD) improvements in a special care unit: a factor analysis. Archives of Gerontology and Geriatrics, 44 (Suppl. 1), 113–120.
Cummings, J. L. (1997). The Neuropsychiatric Inventory: assessing psychopathology in dementia patients. Neurology, 48, 10S–16S.
De Girolamo, G. et al. (2007). Residential facilities for older people in Italy: a five-region survey. Aging: Clinical and Experimental Research, 19, 132–138.
Di Iulio, F. et al. (2010). Occurrence of neuropsychiatric symptoms and psychiatric disorders in mild Alzheimer's disease and mild cognitive impairment subtypes. International Psychogeriatrics, 22, 629–640.
Everitt, B. S., Landau, S. and Leese, M. (2001). Cluster Analysis. London: Arnold.
Folstein, M. F., Folstein, S. E. and McHugh, P. R. (1975). “Mini-mental state”: a practical method for grading the cognitive state of patients for the clinician. Journal of Psychiatric Research, 12, 189–198.
Frisoni, G. B. et al. (1999). Behavioral syndromes in Alzheimer's disease: description and correlates. Dementia and Geriatric Cognitive Disorders, 10, 130–138.
Furniss, L., Craig, S. K. and Burns, A. (1998). Medication use in nursing homes for elderly people. International Journal of Geriatric Psychiatry, 13, 433–439.
Geda, Y. E. et al. (2008). Prevalence of neuropsychiatric symptoms in mild cognitive impairment and normal cognitive aging: population-based study. Archives of General Psychiatry, 65, 1193–1198.
Hinton, L., Tomaszewski Farias, S. and Wegelin, J. (2008). Neuropsychiatric symptoms are associated with disability in cognitively impaired Latino elderly with and without dementia: results from the Sacramento Area Latino study on Aging. International Journal of Geriatric Psychiatry, 23, 102–108.
Hollingworth, P. et al. (2006). Four components describe behavioral symptoms in 1,120 individuals with late-onset Alzheimer's disease. Journal of the American Geriatrics Society, 54, 1348–1354.
ISTAT (2004). Dati del Censimento 2001. Rome: ISTAT.
Kamel, N. S. and Gammack, J. K. (2006). Insomnia in the elderly: cause, approach, and treatment. American Journal of Medicine, 119, 463–469.
Landes, A. M., Sperry, S. D. and Strauss, M. E. (2005). Prevalence of apathy, dysphoria, and depression in relation to dementia severity in Alzheimer's disease. Journal of Neuropsychiatry and Clinical Neurosciences, 17, 342–349.
Lyketsos, C. G., Steinberg, M., Tschanz, J. T., Norton, M. C., Steffens, D. C. and Breitner, J. C. (2000). Mental and behavioral disturbances in dementia: findings from the Cache County Study on Memory in Aging. American Journal of Psychiatry, 157, 708–714.
Lyketsos, C. G., Lopez, O., Jones, B., Fitzpatrick, A. L., Breitner, J. and DeKosky, S. (2002). Prevalence of neuropsychiatric symptoms in dementia and mild cognitive impairment: results from the cardiovascular health study. JAMA, 288, 1475–1483.
Margallo-Lana, M. et al. (2001). Prevalence and pharmacological management of behavioural and psychological symptoms amongst dementia sufferers living in care environments. International Journal of Geriatric Psychiatry, 16, 39–44.
McKay, D. et al. (2004). A critical evaluation of obsessive-compulsive disorder subtypes: symptoms versus mechanisms. Clinical Psychology Review, 24, 283–313.
Measso, G. et al. (1993). The Mini-mental State Examination: normative study of an Italian random sample. Developmental Neuropsychology, 9, 77–85.
Miller, E. A. and Weissert, W. G. (2000). Predicting elderly people's risk for nursing home placement, hospitalization, functional impairment, and mortality: a synthesis. Medical care research and review, 57, 259–297.
Mirakhur, A., Craig, D., Hart, D. J., McLlroy, S. P. and Passmore, A. P. (2004). Behavioural and psychological syndromes in Alzheimer's disease. International Journal of Geriatric Psychiatry, 19, 1035–1039.
Palmer, K., Berger, A. K., Monastero, R., Winblad, B., Backman, L. and Fratiglioni, L. (2007). Predictors of progression from mild cognitive impairment to Alzheimer disease. Neurology, 68, 1596–1602.
Palmer, K. et al. (2010). Neuropsychiatric predictors of progression from amnestic-mild cognitive impairment to Alzheimer's disease: the role of depression and apathy. Journal of Alzheimers Disease, 20, 175–183.
Pham, T. Q., Kifley, A., Mitchell, P. and Wang, J. J. (2006). Relation of age-related macular degeneration and cognitive impairment in an older population. Gerontology, 52, 353–358.
Reichman, W. E. et al. (1998). Psychiatric consultation in the nursing home: a survey of six states. American Journal of Geriatric Psychiatry, 6, 320–327.
Spalletta, G. et al. (2004). Cognition and behaviour are independent and heterogeneous dimensions in Alzheimer's disease. Journal of Neurology, 251, 688–695.
Spalletta, G. et al. (2010). Neuropsychiatric symptoms and syndromes in a large cohort of newly diagnosed, untreated patients with Alzheimer disease. American Journal of Geriatric Psychiatry. Epublished ahead of print: doi: 10.1097/JGP.0b013e3181d6b68d.
Steinberg, M. et al. (2004). The persistence of neuropsychiatric symptoms in dementia: the Cache County Study. International Journal of Geriatric Psychiatry, 19, 19–26.
Zuidema, S., Koopmans, R. and Verhey, F. (2007). Prevalence and predictors of neuropsychiatric symptoms in cognitively impaired nursing home patients. Journal of Geriatric Psychiatry and Neurology, 20, 41–49.