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Positive predictive value (PPV) and negative predictive value (NPV) of airflow limitation at study baseline and primary International Classification of Diseases (ICD) code position with respect to protocol-defined endpoints, by cohort. CLRD = chronic lower respiratory disease; ED = emergency department; HCHS/SOL = Hispanic Community Health Study/Study of Latinos; MESA = Multi-Ethnic Study of Atherosclerosis.
