PT  - JOURNAL ARTICLE
AU  - A J Lloyd
TI  - The extent of patients' understanding of the risk of treatments
AID  - 10.1136/qhc.0100014..
DP  - 2001 Sep 01
TA  - Quality in Health Care
PG  - i14--i18
VI  - 10
IP  - suppl 1
4099  - http://qualitysafety.bmj.com/content/10/suppl_1/i14.short
4100  - http://qualitysafety.bmj.com/content/10/suppl_1/i14.full
SO  - Qual Health Care2001 Sep 01; 10
AB  - The scientific understanding of how people perceive and code risks and then use this information in decision making has progressed greatly in the last 20 years. There is considerable evidence that people employ simplifying heuristics in judgement and decision making. These heuristics may lead to bias in how people interpret information. However, much of our understanding of risk perception is based on laboratory studies. It is much less clear whether risk perception in the real world (as in the case of medical treatments) exhibits the same patterns and biases. This paper reviews the published literature on risk perception in patients who face substantial treatment risks. It examines how accurate patients' perception of risk is, what factors affect the perception of risk, and several possible explanations for why patients' risk perception is not always accurate.