The benefit for the individual unit is to receive an extensive benchmarking report displaying the unit data in comparison with all units from the same specialty from the previous 3 years immediately after the end of data entry and a validation step. Units or groups of units may request specific reports that can be obtained only after a case by case agreement and financial coverage. All data used as a reference for benchmarking purpose are from units where a minimum of 60% of actually present patients have been recruited and the outcome at day 30 is available in more than 80% of these patients. There is no risk for the unit since anonymity of unit is structurally strictly maintained.