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Early and late mortality of 313 ICU patients and the quality of life of 118 long term ICU survivors was studied to assess the effectiveness of intensive care for critically ill patients. The survival rate at discharge from the ICU was 76%, falling to 61% at 6 months and to 58% at 1 year. A simplified acute physiology score (SAPS) was recorded on ICU admission, as well as age, length of ICU-stay and the number of complications during intensive care. Information on housing, drug use, hospital admissions, physical condition and functional status 2 years after ICU discharge was collected by means of a questionnaire. No changes in housing occurred, but drug use and the number of hospital admissions were significantly increased. In 21% of the patients a deteriorated physical condition was found, 77% remained unchanged and 2% were improved 2 years after ICU discharge, compared to their condition prior to the acute illness. Major functional impairment was found in 38% of the patients. Although the longterm physical condition and functional status correlated with SAPS and age on ICU admission, the best indicator for quality of life after intensive care proved to be the health status prior to the acute illness.