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Potential misinterpretations caused by collapsing upper categories of comorbidity indices: An illustration from a cohort of older breast cancer survivors
BACKGROUND: Comorbidity indices summarize complex medical histories into concise ordinal scales, facilitating stratification and regression in epidemiologic analyses. Low subject prevalence in the highest strata of a comorbidity index often prompts combination of upper categories into a single strat...
Main Authors: | , , , , , , |
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Format: | Text |
Language: | English |
Published: |
Dove Medical Press
2009
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Subjects: | |
Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2943165/ https://www.ncbi.nlm.nih.gov/pubmed/20865090 |