Comorbidity and 1-year mortality risks in nursing home residents. 2005

Pieter T M van Dijk, and David R Mehr, and Marcel E Ooms, and Richard Madsen, and Greg Petroski, and Dinnus H Frijters, and Anne Margriet Pot, and Miel W Ribbe
Institute for Research in Extramural Medicine, VU University Medical Center, van der Boechorststraat 7, 1081 BT Amsterdam, the Netherlands. bulderdijk@freeler.nl

OBJECTIVE To investigate the effect of chronic diseases and disease combinations on 1-year mortality in nursing home residents. METHODS Retrospective cohort study using electronically submitted Minimum Data Set (MDS) information and Missouri death certificate data. METHODS Five hundred twenty-two nursing homes in Missouri. METHODS Forty-three thousand five hundred ten nursing home residents with a full MDS assessment in 1999. METHODS Information about chronic diseases, age, sex, and performance in activities of daily living (ADLs) available from the first full MDS 2.0 assessment in 1999; death within 1 year after the first full MDS-assessment in 1999. RESULTS After adjustment for age and sex, eight variables were predictive for 1-year mortality: seven chronic diseases (dementia, cancer, heart failure, renal failure, emphysema/chronic obstructive pulmonary disease, diabetes mellitus, and anemia) and an interaction variable containing age and cancer. Adding terms for disease combinations (e.g., diabetes mellitus and heart failure) did not enhance survival prediction. When there was also adjustment for ADL performance as measured using the MDS-ADL Short Form, dementia and anemia were not included, because they had no prognostic value above that of the other variables. CONCLUSIONS Several chronic diseases were associated with 1-year mortality in the institutionalized elderly after adjustment for ADL performance, age, and sex. Evidence of a synergistic effect of disease combinations on mortality is lacking.

UI MeSH Term Description Entries
D008297 Male Males
D008923 Missouri State bounded on the east by Illinois and Kentucky, on the south by Arkansas, on the west by Kansas, and on the north by Iowa.
D009026 Mortality All deaths reported in a given population. CFR Case Fatality Rate,Crude Death Rate,Crude Mortality Rate,Death Rate,Age Specific Death Rate,Age-Specific Death Rate,Case Fatality Rate,Decline, Mortality,Determinants, Mortality,Differential Mortality,Excess Mortality,Mortality Decline,Mortality Determinants,Mortality Rate,Mortality, Differential,Mortality, Excess,Age-Specific Death Rates,Case Fatality Rates,Crude Death Rates,Crude Mortality Rates,Death Rate, Age-Specific,Death Rate, Crude,Death Rates,Determinant, Mortality,Differential Mortalities,Excess Mortalities,Mortalities,Mortality Declines,Mortality Determinant,Mortality Rate, Crude,Mortality Rates,Rate, Age-Specific Death,Rate, Case Fatality,Rate, Crude Death,Rate, Crude Mortality,Rate, Death,Rate, Mortality,Rates, Case Fatality
D009735 Nursing Homes Facilities which provide nursing supervision and limited medical care to persons who do not require hospitalization. Homes, Nursing,Nursing Home
D002908 Chronic Disease Diseases which have one or more of the following characteristics: they are permanent, leave residual disability, are caused by nonreversible pathological alteration, require special training of the patient for rehabilitation, or may be expected to require a long period of supervision, observation, or care (Dictionary of Health Services Management, 2d ed). For epidemiological studies chronic disease often includes HEART DISEASES; STROKE; CANCER; and diabetes (DIABETES MELLITUS, TYPE 2). Chronic Condition,Chronic Illness,Chronically Ill,Chronic Conditions,Chronic Diseases,Chronic Illnesses,Condition, Chronic,Disease, Chronic,Illness, Chronic
D005260 Female Females
D006707 Homes for the Aged Geriatric long-term care facilities which provide supervision and assistance in activities of daily living with medical and nursing services when required. Old Age Homes,Residential Aged Care Facility,Senior Housing,Home, Old Age,Homes, Old Age,Housing, Senior,Old Age Home
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000203 Activities of Daily Living The performance of the basic activities of self care, such as dressing, ambulation, or eating. ADL,Chronic Limitation of Activity,Limitation of Activity, Chronic,Activities, Daily Living,Activity, Daily Living,Daily Living Activities,Daily Living Activity,Living Activities, Daily,Living Activity, Daily
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly

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