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Assessing illness severity: does clinical judgment work?

M E Charlson, F L Sax, C R MacKenzie

Journal of Chronic Diseases

|January 1, 1986

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Physician

Area of Science:

Clinical Medicine
Healthcare Research
Patient Stratification

Background:

Accurate clinical severity classification is crucial for medical research and patient stratification.
Existing methods for assessing severity may not fully capture patient condition.
Understanding patient severity is key for interpreting casemix and trial outcomes.

Purpose of the Study:

To evaluate the effectiveness of clinical judgment in estimating patient severity.
To determine if physician severity ratings predict in-hospital mortality.
To assess the utility of clinical judgment for patient stratification in clinical trials.

Main Methods:

A prospective study of 604 medical admissions over one month.
Responsible residents rated patient sickness severity upon admission.

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Analysis correlated severity ratings with in-hospital mortality and time to death.

Main Results:

Physician severity ratings were the most significant predictor of in-hospital mortality.
Mortality rates increased significantly with higher severity strata (0% to 58%).
Severity ratings predicted outcomes independently of age, sex, race, or comorbidity count.

Conclusions:

Physician's clinical judgment provides an accurate estimation of illness severity.
This method can effectively stratify patients for clinical trials and control for casemix.
Clinical severity assessment via physician judgment is a valuable tool in medical research.