• Jane F Knapp, Stephen D Simon, and Vidya Sharma.
• Department of Pediatrics, Children’s Mercy Hospitals and Clinics, University of Missouri–Kansas City, School of Medicine, Kansas City, Missouri 64108, USA. jknapp@cmh.edu
• Pediatrics. 2013 Aug 1;132(2):245-52.

ObjectivesThe objectives were (1) to determine trends in radiograph use in emergency department (ED) care of children with asthma, bronchiolitis, and croup; and (2) to examine the association of patient and hospital factors with variation in radiograph use.MethodsA retrospective, cross-sectional study of National Hospital Ambulatory Medical Care Survey data between 1995 and 2009 on radiograph use at ED visits in children aged 2 to 18 years with asthma, aged 3 months to 1 year with bronchiolitis, and aged 3 months to 6 years with croup. Odds ratios (ORs) were calculated and adjusted for all factors studied.ResultsThe use of radiographs for asthma increased significantly over time (OR: 1.06; 95% confidence interval [CI]: 1.03-1.09; P < .001 for trend) but were unchanged for bronchiolitis and croup. Pediatric-focused EDs had lower use for asthma (OR: 0.44; 95% CI: 0.29-0.68), bronchiolitis (OR: 0.37; 95% CI: 0.23-0.59), and croup (OR: 0.34; 95% CI: 0.17-0.68). Compared with the Northeast region, the Midwest and South had statistically higher use of radiographs for all 3 conditions. The Western region had higher use only for asthma (OR: 1.67; 95% CI: 1.07-2.60), and bronchiolitis (OR: 2.94; 95% CI: 1.48-5.87). No associations were seen for metropolitan statistical area or hospital ownership status.ConclusionsThe ED use of radiographs for children with asthma increased significantly from 1995 to 2009. Reversing this trend could result in substantial cost savings and reduced radiation. Pediatric-focused EDs used significantly fewer radiographs for asthma, bronchiolitis, and croup. The translation of practices from pediatric-focused EDs to all EDs could improve performance.

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