Temporal validation of a multivariable surgical mortality prediction model (NZRisk): a New Zealand national cohort study.

ABSTRACT:

Objectives

Clinical risk calculators (CRCs), such as NZRisk, are used daily by clinicians to guide clinical decisions and explain individual risk to patients. The utility and robustness of these tools depends on the methods used to create the underlying mathematical model, as well as the stability of that model in relation to changing clinical practice and patient populations over time. The later should be checked by temporal validation using external data. Few if any of the clinical prediction models in current clinical use have published temporal validation. Here, we use a large external dataset to temporally validate NZRisk; a perioperative risk prediction model used in the New Zealand population.

Methods

A sample of 1 976 362 adult non-cardiac surgical procedures collect

SUBMITTER: Boyle L 

PROVIDER: S-EPMC10069599 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature