title: A randomised trial of an online lecture with and without audio.
abstract: OBJECTIVE
  To determine the impact of adding audio-feed to an online lecture on screening given to medical students who were participating in an outpatient clerkship.
  
  
  METHODS
  Prospective, randomised, controlled study.
  
  
  METHODS
  Vanderbilt University School of Medicine, Nashville and Wake Forest Medical School, Winston-Salem.
  
  
  METHODS
  A total of 59 Years 3 and 4 medical students.
  
  
  METHODS
  Students' use of time, satisfaction with the lecture experience, and knowledge. Educational intervention The online lecture was developed at Vanderbilt University. At Vanderbilt, 16 Year 4 medical students were randomised to the lecture on screening with audio and 17 Year 4 medical students were randomised to the same lecture without audio. At Wake Forest, 13 Year 3 medical students were randomised to the lecture on screening with audio and 13 Year 3 students were randomised to the same lecture without audio.
  
  
  RESULTS
  The audio lecture required 20 more minutes to complete than the non-audio lecture. Students in the audio group were more satisfied with their experience than students in the non-audio group. Students in the audio-feed group achieved a trend for higher post-intervention knowledge scores, with the difference attributed to the students at Vanderbilt.
  
  
  CONCLUSIONS
  Audio narration is an important aspect of an online lecture. The distribution of online lectures to students at different sites and different training levels requires further study.
authors.affiliation: Departments of Medicine and Biomedical Informatics, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, USA. anderson.spickard-iii@mcmail.vanderbilt.edu
authors.forename: Anderson
authors.initials: A
authors.lastname: Spickard
authors.forename: Jeffrey
authors.initials: J
authors.lastname: Smithers
authors.forename: David
authors.initials: D
authors.lastname: Cordray
authors.forename: Joseph
authors.initials: J
authors.lastname: Gigante
authors.forename: James L
authors.initials: JL
authors.lastname: Wofford
mesh_terms: D000704:Analysis of Variance; D001296:Audiovisual Aids / Q000639:trends; D016009:Chi-Square Distribution; D002982:Clinical Clerkship; D003194:Computer-Assisted Instruction / Q000379:methods; D004501:Education, Medical / Q000379:methods*; D006801:Humans; D009862:Online Systems / Q000592:standards; D013663:Teaching / Q000379:methods; D014481:United States