Risk-adjusted case series
A risk-adjusted case series is an observational study design that reports outcomes for a consecutive or defined group of patients undergoing the same procedure or sharing a condition, while statistically correcting for differences in patient-level baseline risk. Rather than presenting raw complication or mortality rates, it compares observed outcomes against expected rates derived from a validated scoring model (e.g., POSSUM, APACHE, ASA grade), enabling fairer evaluation of clinical performance across institutions or over time.
Source record
Citations copied verbatim from the method’s source record. No claim-level verification is inferred from them.
- Copeland, G. P., Jones, D., & Walters, M. (1991). POSSUM: a scoring system for surgical audit. British Journal of Surgery, 78(3), 355–360. · DOI 10.1002/bjs.1800780327
- Mayer, E. K., Bottle, A., Darzi, A. W., & Aylin, P. (2004). Case volume and outcome in the surgical treatment of colorectal cancer. British Journal of Surgery, 91(9), 1104–1110. · URL
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Related methods
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