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Charlson and colleagues: a prognostic comorbidity classification for longitudinal studies

Contribution grade

Epidemiology and public health · ALGORITHM

Reference score70,000Provisional editorial estimate of this exact contribution; its grade is assessed separately.

What changed

Developed and validated a weighted comorbidity index for estimating mortality risk in longitudinal studies using development and independent follow-up cohorts.

Scientific scope

The record is the exact 1987 Journal of Chronic Diseases paper and its studied cohorts. Administrative-code adaptations, recalibrations, disease-specific variants and use as a universal individual prognostic score remain separate.

Evidence

The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. The record is the exact 1987 Journal of Chronic Diseases paper and its studied cohorts. Administrative-code adaptations, recalibrations, disease-specific variants and use as a universal individual prognostic score remain separate.

Contributors

Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.

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