title: Validating measures of third year medical students' use of interpreters by standardized patients and faculty observers.
abstract: BACKGROUND
  Increasing prevalence of limited English proficiency patient encounters demands effective use of interpreters. Validated measures for this skill are needed.
  
  
  OBJECTIVE
  We describe the process of creating and validating two new measures for rating student skills for interpreter use.
  
  
  METHODS
  Encounters using standardized patients (SPs) and interpreters within a clinical practice examination (CPX) at one medical school.
  
  
  METHODS
  Students were assessed by SPs using the interpreter impact rating scale (IIRS) and the physician patient interaction (PPI) scale. A subset of 23 encounters was assessed by 4 faculty raters using the faculty observer rating scale (FORS). Internal consistency reliability was assessed by Cronbach's coefficient alpha (alpha). Interrater reliability of the FORS was examined by the intraclass correlation coefficient (ICC). The FORS and IIRS were compared and each was correlated with the PPI.
  
  
  RESULTS
  Cronbach's alpha was 0.90 for the 7-item IIRS and 0.88 for the 11-item FORS. ICC among 4 faculty observers had a mean of 0.61 and median of 0.65 (0.20, 0.86). Skill measured by the IIRS did not significantly correlate with FORS but correlated with the PPI.
  
  
  CONCLUSIONS
  We developed two measures with good internal reliability for use by SPs and faculty observers. More research is needed to clarify the reasons for the lack of concordance between these measures and which may be more valid for use as a summative assessment measure.
authors.affiliation: University of California, Irvine School of Medicine, Irvine, CA, USA. dalie@uci.edu
authors.forename: Desiree
authors.initials: D
authors.lastname: Lie
authors.forename: John
authors.initials: J
authors.lastname: Boker
authors.forename: Sylvia
authors.initials: S
authors.lastname: Bereknyei
authors.forename: Susan
authors.initials: S
authors.lastname: Ahearn
authors.forename: Charlotte
authors.initials: C
authors.lastname: Fesko
authors.forename: Patricia
authors.initials: P
authors.lastname: Lenahan
mesh_terms: D003144:Communication Barriers; D054521:Cultural Competency / Q000193:education*; D004504:Education, Medical, Undergraduate / Q000379:methods*; D004521:Educational Measurement / Q000379:methods*; D005180:Faculty, Medical; D006801:Humans; D016544:Patient Simulation; D010817:Physician-Patient Relations; D015203:Reproducibility of Results; D014175:Translating