title: Appropriateness of antibiotic therapy on weekends versus weekdays.
abstract: OBJECTIVE
  To compare the appropriateness of antibiotic treatment prescribed in an emergency department (ED) of a tertiary medical centre on weekdays and weekends.
  
  
  METHODS
  During a 1 month period, medical charts of 1029 ED visits for patients who were discharged from the ED were reviewed. Data of patients who were discharged with antibiotics were blind evaluated by two infectious disease specialists, and an 'appropriateness score' was given to the antibiotic prescription.
  
  
  RESULTS
  Antibiotics were prescribed at discharge for 182 (17.7%) patients. Appropriate antibiotic treatment was administered significantly less frequently on weekends when compared with weekdays (P = 0.004). Appropriateness scores were higher for the surgical and urological wings (P = 0.011) and for diagnoses of pneumonia and urinary tract infection (P = 0.005). Time of the day and patient's age and sex did not have a significant effect on the appropriateness score. Adjusting for all variables, only weekends remained significantly associated with less appropriate antibiotic treatment, odds ratio 0.35 and 95% confidence intervals 0.16-0.78.
  
  
  CONCLUSIONS
  This study shows less appropriate antibiotic prescription in an ED on weekends than weekdays. More studies are required to clarify measures to improve appropriate antibiotic therapy at weekends.
authors.affiliation: Infectious Diseases Unit, Rabin Medical Center, Beilinson Hospital, Petah-Tiqwa 49100, Israel. jihadb@clalit.org.il
authors.forename: Jihad
authors.initials: J
authors.lastname: Bishara
authors.forename: Dov
authors.initials: D
authors.lastname: Hershkovitz
authors.forename: Mical
authors.initials: M
authors.lastname: Paul
authors.forename: Zvi
authors.initials: Z
authors.lastname: Rotenberg
authors.forename: Silvio
authors.initials: S
authors.lastname: Pitlik
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D002648:Child; D002675:Child, Preschool; D003141:Communicable Diseases / Q000188:drug therapy; D004363:Drug Utilization; D005260:Female; D006748:Hospital Departments; D006785:Hospitals, University; D006801:Humans; D007223:Infant; D007557:Israel; D008297:Male; D008875:Middle Aged; D013997:Time Factors
chemical_list: D000900:Anti-Bacterial Agents