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The psychosis metabolic risk calculator (PsyMetRiC) for young people with psychosis: international external validation and site-specific recalibration in two independent European samples

Abstract: Background: Cardiometabolic dysfunction is common in young people with psychosis. Recently, the Psychosis Metabolic Risk Calculator (PsyMetRiC) was developed and externally validated in the UK, predicting up-to six-year risk of metabolic syndrome (MetS) from routinely collected data. The full-model includes age, sex, ethnicity, body-mass index, smoking status, prescription of metabolically-active antipsychotic medication, high-density lipoprotein, and triglyceride concentrations; the partial-model excludes biochemical predictors. Methods: To move toward a future internationally-useful tool, we externally validated PsyMetRiC in two independent European samples. We used data from the PsyMetab (Lausanne, Switzerland) and PAFIP (Cantabria, Spain) cohorts, including participants aged 16-35y without MetS at baseline who had 1-6y follow-up. Predictive performance was assessed primarily via discrimination (C-statistic), calibration (calibration plots), and decision curve analysis. Site-specific recalibration was considered. Findings: We included 1024 participants (PsyMetab n=558, male=62%, outcome prevalence=19%, mean follow-up=2.48y; PAFIP n=466, male=65%, outcome prevalence=14%, mean follow-up=2.59y). Discrimination was better in the full- compared with partial-model (PsyMetab=full-model C=0.73, 95% C.I., 0.68-0.79, partial-model C=0.68, 95% C.I., 0.62-0.74; PAFIP=full-model C=0.72, 95% C.I., 0.66-0.78; partial-model C=0.66, 95% C.I., 0.60-0.71). As expected, calibration plots revealed varying degrees of miscalibration, which recovered following site-specific recalibration. PsyMetRiC showed net benefit in both new cohorts, more so after recalibration. Interpretation: The study provides evidence of PsyMetRiC's generalizability in Western Europe, although further local and international validation studies are required. In future, PsyMetRiC could help clinicians internationally to identify young people with psychosis who are at higher cardiometabolic risk, so interventions can be directed effectively to reduce long-term morbidity and mortality.

 Fuente: The Lancet Regional Health - Europe, 2022, 22, 100493

 Editorial: Elsevier

 Fecha de publicación: 19/08/2022

 Nº de páginas: 14

 Tipo de publicación: Artículo de Revista

 DOI: 10.1016/j.lanepe.2022.100493

 ISSN: 2666-7762

 Proyecto español: SAF2016-76046-R and SAF2013-46292-R

 Url de la publicación: https://doi.org/10.1016/j. lanepe.2022.100493

Autoría

PERRY, BENJAMIN I.

VANDENBERGHE, FREDERIK

GARRIDO-TORRES, NATHALIA

OSIMO, EMANUELE F.

PIRAS, MARIANNA

UPTHEGROVE, RACHEL

GROSU, CLAIRE

VICTOR ORTIZ GARCIA DE LA FOZ

JONES, PETER B.

LAABOUB, NERMINE

RUIZ-VEGUILLA, MIGUEL

STOCHL, JAN

DUBATH, CELINE

CANAL-RIVERO, MANUEL

MALLIKARJUN, PAVAN

REYMOND-DELACRÉTAZ, AURÉLIE

ANSERMOT, NICOLAS

FERNANDEZ-EGEA, EMILIO

CRETTOL, SEVERINE