ICD-9 tobacco use codes are effective identifiers of smoking status.

Wiley LK, Shah A, Xu H, Bush WS
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PMID: 23396545 · PMCID: PMC3721171 · DOI:10.1136/amiajnl-2012-001557

MeSH Terms (5)

Clinical Coding Humans International Classification of Diseases Sensitivity and Specificity Smoking

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