A predictive Bayesian approach to risk analysis in health care.
BACKGROUND
The Bayesian approach is now widely recognised as a proper framework for analysing risk in health care. However, the traditional text-book Bayesian approach is in many cases difficult to implement, as it is based on abstract concepts and modelling.


METHODS
The essential points of the risk analyses conducted according to the predictive Bayesian approach are identification of observable quantities, prediction and uncertainty assessments of these quantities, using all the relevant information. The risk analysis summarizes the knowledge and lack of knowledge concerning critical operations and other activities, and give in this way a basis for making rational decisions.


RESULTS
It is shown that Bayesian risk analysis can be significantly simplified and made more accessible compared to the traditional text-book Bayesian approach by focusing on predictions of observable quantities and performing uncertainty assessments of these quantities using subjective probabilities.


CONCLUSIONS
The predictive Bayesian approach provides a framework for ensuring quality of risk analysis. The approach acknowledges that risk cannot be adequately described and evaluated simply by reference to summarising probabilities. Risk is defined by the combination of possible consequences and associated uncertainties.
Aven
Terje
T
Department of industrial economics, risk management and planning, University of Stavanger, Stavanger, Norway. terje.aven@uis.no
Eidesen
Karianne
K
D001499:Bayes Theorem; D003695:Delivery of Health Care; D005544:Forecasting; D006801:Humans; D018570:Risk Assessment
Risk Anal. 2001 Oct;21(5):807-19
11798118
Qual Saf Health Care. 2003 Dec;12 Suppl 2:ii33-8
14645893
Risk Anal. 2002 Dec;22(6):1071-94
12530780
J Hazard Mater. 2006 Sep 21;137(2):681-91
16675108
J Hazard Mater. 2006 Mar 31;130(3):284-92
16107300