Why were they in hospital so long?
D000367:Age Factors; D000368:Aged; D002318:Cardiovascular Diseases / Q000453:epidemiology; D003704:Dementia / Q000453:epidemiology; D005260:Female; D005500:Follow-Up Studies; D005851:Geriatric Nursing; D005853:Geriatrics; D006707:Homes for the Aged; D006760:Hospitalization; D006801:Humans; D007592:Joint Diseases / Q000453:epidemiology; D008297:Male; D009461:Neurologic Manifestations / Q000453:epidemiology; D010347:Patient Care Planning; D012737:Sex Factors; D012924:Social Conditions