title: Effect of practice variation on resource utilization in infants hospitalized for viral lower respiratory illness.
abstract: OBJECTIVE
  Hospital care for children with viral lower respiratory illness (VLRI) is highly variable, and its relationship to severity and impact on outcome is unclear. Using the Pediatric Comprehensive Severity Index, we analyzed the correlation of institutional practice variation with severity and resource utilization in 10 children's medical centers.
  
  
  METHODS
  Demographics, clinical information, laboratory results, interventions, and outcomes were extracted from the charts of consecutive infants with VLRI from 10 children's medical centers. Pediatric Component of the Comprehensive Severity Index scoring was performed at admission and at maximum during hospitalization. The correlation of patient variables, interventions, and resource utilization at the patient level was compared with their correlation at the aggregate institutional level.
  
  
  RESULTS
  Of 601 patients, 1 died, 6 were discharged to home health care, 4 were discharged to rehabilitative care, and 2 were discharged to chronic nursing care. Individual patient admission severity score correlated positively with patient hospital costs (r = 0.48), but institutional average patient severity was negatively correlated with average institutional costs (r = -0.26). Maximal severity score correlated well with costs (r = 0.66) and length of stay (LOS; r = 0.64) at the patient level but poorly at the institutional level (r = 0.07 costs; r = 0.40 LOS). The institutional intensity of therapy was negatively correlated with admission severity (r = -0.03) but strongly correlated with costs (r = 0.84) and LOS (r = 0.83).
  
  
  CONCLUSIONS
  Institutional differences in care practices for children with VLRI were not explained by differences in patient severity and did not affect the children's recovery but correlated significantly with hospital costs and LOS.
authors.affiliation: University of Virginia Children's Medical Center, Charlottesville, Virginia, USA. dfw4m@unix.mail.virginia.edu
authors.forename: D F
authors.initials: DF
authors.lastname: Willson
authors.forename: S D
authors.initials: SD
authors.lastname: Horn
authors.forename: J O
authors.initials: JO
authors.lastname: Hendley
authors.forename: R
authors.initials: R
authors.lastname: Smout
authors.forename: J
authors.initials: J
authors.lastname: Gassaway
mesh_terms: D001990:Bronchiolitis, Viral / Q000175:diagnosis / Q000191:economics / Q000628:therapy; D005260:Female; D017048:Health Care Costs / Q000706:statistics & numerical data; D006295:Health Resources / Q000706:statistics & numerical data; D006760:Hospitalization / Q000191:economics; D006776:Hospitals, Pediatric / Q000191:economics / Q000458:organization & administration* / Q000706:statistics & numerical data; D006801:Humans; D007223:Infant; D007902:Length of Stay / Q000191:economics / Q000706:statistics & numerical data; D008297:Male; D010818:Practice Patterns, Physicians'; D018357:Respiratory Syncytial Virus Infections / Q000175:diagnosis / Q000191:economics / Q000628:therapy; D012141:Respiratory Tract Infections / Q000175:diagnosis / Q000191:economics / Q000628:therapy*; D012720:Severity of Illness Index; D014777:Virus Diseases / Q000175:diagnosis / Q000191:economics / Q000628:therapy*