This descriptive study examined the incidence, onset, and correlates of adverse events (acute confusion, adverse drug reactions, nutritional problems, pressure ulcers, falls, and transient urinary incontinence) experienced by elderly persons hospitalized for acute illness. The researchers studied 64 patients (mean age 74.4 years) for the duration of their hospitalization. Over half (54%) experienced some degree of acute confusion during their hospitalization. There was a 24% incidence of pressure ulcers and a 2% incidence of adverse reactions to medications. No instances of falls or transient urinary incontinence were observed or documented in this sample. Nutritional problems were identified in one third of the sample. Predictive profiles of patients at risk for adverse events associated with hospitalization were developed and provide directions for patient care and further research.