Derivation and External Validation of Objective Performance Status Among Patients With Metastatic Cancer.

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Title: Derivation and External Validation of Objective Performance Status Among Patients With Metastatic Cancer.
Authors: Ruiz E; Medical Oncology Department, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain., Manz CR; Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA., Girard A; Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA., Hernández-Guerrero T; Early Phase Clinical Trials Unit, START Madrid-FJD, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain., Doger De-Speville B; Early Phase Clinical Trials Unit, START Madrid-FJD, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain., Morillo D; Early Phase Clinical Trials Unit, START Madrid-FJD, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain., Mahíllo-Fernández I; Biostatistics Unit, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain., García-Foncillas J; Medical Oncology Department, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain., Li E; Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA., Ferrell WJ; Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA., Barnett I; Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA., Moreno V; Early Phase Clinical Trials Unit, START Madrid-FJD, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain., Parikh RB; Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.
Source: JCO oncology practice [JCO Oncol Pract] 2026 Mar; Vol. 22 (3), pp. 400-409. Date of Electronic Publication: 2025 Jul 25.
Publication Type: Journal Article; Validation Study
Journal Info: Publisher: American Society of Clinical Oncology Country of Publication: United States NLM ID: 101758685 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 2688-1535 (Electronic) Linking ISSN: 26881527 NLM ISO Abbreviation: JCO Oncol Pract Subsets: MEDLINE
Database: MEDLINE Ultimate
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  Data: Derivation and External Validation of Objective Performance Status Among Patients With Metastatic Cancer.
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  Data: <searchLink fieldCode="AU" term="%22Ruiz+E%22">Ruiz E</searchLink>; Medical Oncology Department, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain.<br /><searchLink fieldCode="AU" term="%22Manz+CR%22">Manz CR</searchLink>; Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA.<br /><searchLink fieldCode="AU" term="%22Girard+A%22">Girard A</searchLink>; Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.<br /><searchLink fieldCode="AU" term="%22Hernández-Guerrero+T%22">Hernández-Guerrero T</searchLink>; Early Phase Clinical Trials Unit, START Madrid-FJD, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain.<br /><searchLink fieldCode="AU" term="%22Doger+De-Speville+B%22">Doger De-Speville B</searchLink>; Early Phase Clinical Trials Unit, START Madrid-FJD, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain.<br /><searchLink fieldCode="AU" term="%22Morillo+D%22">Morillo D</searchLink>; Early Phase Clinical Trials Unit, START Madrid-FJD, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain.<br /><searchLink fieldCode="AU" term="%22Mahíllo-Fernández+I%22">Mahíllo-Fernández I</searchLink>; Biostatistics Unit, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain.<br /><searchLink fieldCode="AU" term="%22García-Foncillas+J%22">García-Foncillas J</searchLink>; Medical Oncology Department, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain.<br /><searchLink fieldCode="AU" term="%22Li+E%22">Li E</searchLink>; Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.<br /><searchLink fieldCode="AU" term="%22Ferrell+WJ%22">Ferrell WJ</searchLink>; Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.<br /><searchLink fieldCode="AU" term="%22Barnett+I%22">Barnett I</searchLink>; Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.<br /><searchLink fieldCode="AU" term="%22Moreno+V%22">Moreno V</searchLink>; Early Phase Clinical Trials Unit, START Madrid-FJD, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain.<br /><searchLink fieldCode="AU" term="%22Parikh+RB%22">Parikh RB</searchLink>; Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.
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  Data: <searchLink fieldCode="JN" term="%22101758685%22">JCO oncology practice</searchLink> [JCO Oncol Pract] 2026 Mar; Vol. 22 (3), pp. 400-409. <i>Date of Electronic Publication: </i>2025 Jul 25.
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  Data: <i>Publisher: </i><searchLink fieldCode="PB" term="%22American+Society+of+Clinical+Oncology%22">American Society of Clinical Oncology </searchLink><i>Country of Publication: </i>United States <i>NLM ID: </i>101758685 <i>Publication Model: </i>Print-Electronic <i>Cited Medium: </i>Internet <i>ISSN: </i>2688-1535 (Electronic) <i>Linking ISSN: </i><searchLink fieldCode="IS" term="%2226881527%22">26881527 </searchLink><i>NLM ISO Abbreviation: </i>JCO Oncol Pract <i>Subsets: </i>MEDLINE
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              Text: 2026 Mar
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