可用性偏差和反射推理对内科医生诊断准确性的影响
Sílvia Mamede1, Tamara van Gog, Kees van den Berge
1Department of Psychology, Erasmus University Rotterdam, Burgemeester Oudlaan 50, Rotterdam, 3062 PA, The Netherlands. mamede@fsw.eur.nl
JAMA
|September 16, 2010
概括
最近类似的病例引发了第二年居民的可用性偏差,导致诊断错误. 然而,结构化反射改善了所有居民的诊断准确性,减轻了这种偏差.
科学领域:
- 医学中的认知心理学.
- 医学教育 医学教育
- 临床决策 临床决策
背景情况:
- 诊断错误与临床推理中的认知偏见有关.
- 关于偏见的认知机制和有效的教育干预措施的经验数据有限.
研究的目的:
- 确定最近的临床经验是否导致可用性偏差,导致诊断错误.
- 评估结构化反射是否可以抵消这种可用性偏差.
主要方法:
- 与36名内科住院医生 (一年级和二年级) 进行实验研究.
- 第一个阶段:最初诊断了6例病例.
- 第二阶段:使用非分析推理诊断了8例新病例;4例的发现与第一阶段病例相似.
- 第三阶段:使用反思性推理重新诊断了4个类似的病例.
主要成果:
- 与第一年居民相比,第二年居民在类似情况下显示了可用性偏差 (精度较低,P=.03).
- 二年生经常回忆起类似病例的先前诊断 (P=.04).
- 反射推理显著提高了两个居民组的诊断准确性 (P=.006).
结论:
- 二年级学生在类似情况下使用非分析性推理时表现出可用性偏见.
- 诊断反射有效地抵消了这种偏见,并在第一年和第二年居民中提高了准确性.
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