Predicting frequent emergency department visits among children with asthma using EHR data.

TitlePredicting frequent emergency department visits among children with asthma using EHR data.
Publication TypeJournal Article
Year of Publication2017
AuthorsDas LT, Abramson EL, Stone AE, Kondrich JE, Kern LM, Grinspan ZM
JournalPediatr Pulmonol
Date Published2017 07
KeywordsAsthma, Child, Child, Preschool, Electronic Health Records, Emergency Service, Hospital, Female, Humans, Logistic Models, Male, Retrospective Studies

OBJECTIVE: For children with asthma, emergency department (ED) visits are common, expensive, and often avoidable. Though several factors are associated with ED use (demographics, comorbidities, insurance, medications), its predictability using electronic health record (EHR) data is understudied.

METHODS: We used a retrospective cohort study design and EHR data from one center to examine the relationship of patient factors in 1 year (2013) and the likelihood of frequent ED use (≥2 visits) in the following year (2014), using bivariate and multivariable statistics. We applied and compared several machine-learning algorithms to predict frequent ED use, then selected a model based on accuracy, parsimony, and interpretability.

RESULTS: We identified 2691 children. In bivariate analyses, future frequent ED use was associated with demographics, co-morbidities, insurance status, medication history, and use of healthcare resources. Machine learning algorithms had very good AUC (area under the curve) values [0.66-0.87], though fair PPV (positive predictive value) [48-70%] and poor sensitivity [16-27%]. Our final multivariable logistic regression model contained two variables: insurance status and prior ED use. For publicly insured patients, the odds of frequent ED use were 3.1 [2.2-4.5] times that of privately insured patients. Publicly insured patients with 4+ ED visits and privately insured patients with 6+ ED visits in a year had ≥50% probability of frequent ED use the following year. The model had an AUC of 0.86, PPV of 56%, and sensitivity of 23%.

CONCLUSION: Among children with asthma, prior frequent ED use and insurance status strongly predict future ED use.

Alternate JournalPediatr. Pulmonol.
PubMed ID28557381
Faculty Publication Student Publication