System-related interventions to reduce diagnostic errors: a narrative review

Area of Science:

• Healthcare quality improvement
• Patient safety research
• Medical error analysis

Background:

• Diagnostic errors contribute to preventable morbidity and mortality.
• System-related factors are key contributors to diagnostic errors.
• Recent literature highlights the need for interventions to address these errors.

Purpose of the Study:

• To review the recent literature on interventions addressing system-related factors in diagnostic errors.
• To identify tested and suggested interventions for diagnostic error prevention.

Main Methods:

• Comprehensive literature search including PubMed, reference lists, additional databases, and expert consultation (2000-2009).
• Inclusion of articles formally evaluating interventions or suggesting potential interventions.
• Categorization of interventions by diagnostic process step (e.g., patient-provider encounter, test interpretation, follow-up).

Main Results:

• 43 articles were reviewed; only six reported tested interventions, while 37 offered suggestions.
• Empirical studies were limited, often non-experimental with small sample sizes.
• Outcome measures were underdeveloped and highly variable across studies.

Conclusions:

• Limited empirical evidence exists for interventions to reduce diagnostic errors.
• Advancing diagnostic error prevention requires more robust study designs.
• Rigorous definitions of diagnostic processes and outcomes are crucial for measuring intervention effectiveness.