Review of methods used to measure comorbidity in cancer populations: no gold standard exists.

Abstract

OBJECTIVE This article reviews methods used to measure comorbidity in the context of cancer; summarizing methods, identifying contexts in which they have been used, and assessing the validity, reliability, and feasibility of each approach. STUDY DESIGN AND SETTING Studies describing methods to measure comorbidity in epidemiological studies related to… (More)
DOI: 10.1016/j.jclinepi.2012.02.017

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