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Using Temporal Features to Provide Data-Driven Clinical Early Warnings for Chronic Obstructive Pulmonary Disease and Asthma Care Management: Protocol for a Secondary Analysis

Using Temporal Features to Provide Data-Driven Clinical Early Warnings for Chronic Obstructive Pulmonary Disease and Asthma Care Management: Protocol for a Secondary Analysis

A patient is deemed to have COPD if he/she is ≥40 years and has one of the following: 1 outpatient visit diagnosis code of COPD (International Classification of Diseases, Ninth Revision [ICD-9]: 491.21, 491.22, 491.8, 491.9, 492.8, 493.20, 493.21, 493.22, 496; International Classification of Diseases, Tenth Revision [ICD-10]: J41.8, J42, J43.*, J44.*) and ≥1 prescription of tiotropium within 6 months of the outpatient visit. ≥2 outpatient or ≥1 emergency room visit diagnosis codes of COPD (ICD-9: 491.21, 491.22

Gang Luo, Bryan L Stone, Corinna Koebnick, Shan He, David H Au, Xiaoming Sheng, Maureen A Murtaugh, Katherine A Sward, Michael Schatz, Robert S Zeiger, Giana H Davidson, Flory L Nkoy

JMIR Res Protoc 2019;8(6):e13783

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