Table 4.

Comparison of a health system-specific risk score to traditional scores

Features	Current Scores	Advantage of health system-based score
Calibration	Often poor	Good
Discrimination	Decent	Decent
External validity	Varies	Not needed
Ease of use	Often difficult	Automated into workflow
Population relevance	Debatable	Ideal
Ease of updating	Difficult, out of organizational control	Moderate, based on organizational data
Ease of improvement	Follows large cohort development	Follows new data in EHR
Age restrictions	Commonly used	Per local decisions
Comorbidity restrictions	Often necessary due to sample size	Less common risk factors can be included