Patients classification System

tools for
Cost management

tools for
Quality management

tools for

4 Why to choose US

4 implementation


4 contact

4 Logic

4 diagnoses

4 procedures

4 inpatients

4 outpatients

4 insurance

4 readmissions

4 reoperations

4 complications

4 deaths

4 length of stay

4 day surgery

4 unjustified stays


If a death was not related to expected end of life or to resuscitation at admission (related to pre-hospital care, it does not mean that it was an adverse event. But if such premature deaths are too numerous, it is probable that a part of them were undesirable events. Thus, the safety of care is questionable if observed premature death rate is higher than expected rates, computed in taking into account the case mix of patients (4EXPECTED DEATH RATES). Analyzing the causes of premature deaths is recommended in this case, to understand how to improve the safety of care.

Observed rate (PD1) Expected rate: average (PD0), minimal (PD0min), maximal (PD0max)

Rate ratio (RPD): observed rate (PD1) / expected rate (PD0).

If the rate ratio is greater than 1.2, it is recommended to conduct a detailed review of medical records to analyze the causes of premature deaths (4MEDICAL REVIEW)
If the rate ratio is lower than 0.8, it is a good result.

Statistical significance

A significantly lower than expected rate (PD1 < PD0min)
B not significantly different from PD1 (PD0min < PD1 < PD0max)
C significantly higher than expected rate (PD1 > PD0max).

SQLape s..r.l. 2014. Last update: 20.05.2014