Unclear regulations and informal data gathering on immigrants who receive or donate organs can cause mistrust and suspicion of the organ allocation system and affect donation rates.
Demographic information about a specific subset of patients can help physicians recognize conditions they do not expect to find in the larger population.
The WHO Clinical Staging System for HIV/AIDS allows physicians in resource-limited settings to make clinical decisions based on patient clinical features instead of laboratory tests.
Clinical decision making calls for use of both explicit and tacit knowledge despite evidence-based medicine's assumption that explicit information is sufficient.