title: The interexaminer reliability of measuring passive cervical range of motion, revisited.
abstract: OBJECTIVE
  To study the interexaminer reliability of measuring passive cervical range of motion (ROM).
  
  
  METHODS
  Repeated blind measures of passive cervical ROM by two different examiners.
  
  
  METHODS
  Ambulatory outpatient facility in an independent National Health Service of Denmark funded chiropractic research institution.
  
  
  METHODS
  Thirty-five asymptomatic volunteers (17 men and 18 women) aged 20-28 yr.
  
  
  METHODS
  Measurement of passive cervical ROM with the use of a strap-on head goniometer by two blind examiners. Each subject was measured twice with 15-min intervals, using a mean-of-five-measurements protocol.
  
  
  METHODS
  The reliability of measuring passive cervical ROM in six separate directions of movement from "neutral zero" and from one extreme to the other in three planes.
  
  
  RESULTS
  The inter- and intra-examiner reliability was evaluated using a paired t test and Pearson's Correlation Coefficient (supplemented by a scatterplot). Intraclass Correlation Coefficients were also calculated. Interexaminer reliability was found to be acceptable (Pearson's r = .61 - .88) for measuring in three planes. Interexaminer reliability was less than acceptable (Pearson's r = .39 - .70) for measuring passive ROM in 6 directions from neutral zero.
  
  
  CONCLUSIONS
  Passive cervical ROM could be measured reliably by different examiners for measurements in three planes. Measurements from neutral zero in six directions were unreliable when measured by different examiners.
authors.affiliation: IMB (biomechanics), Faculty of Health Science, University of Odense, Denmark.
authors.forename: N
authors.initials: N
authors.lastname: Nilsson
authors.forename: H W
authors.initials: HW
authors.lastname: Christensen
authors.forename: J
authors.initials: J
authors.lastname: Hartvigsen
mesh_terms: D000328:Adult; D002574:Cervical Vertebrae / Q000502:physiology*; D003627:Data Interpretation, Statistical; D005260:Female; D006801:Humans; D008297:Male; D009068:Movement / Q000502:physiology; D015588:Observer Variation; D016059:Range of Motion, Articular / Q000502:physiology*; D015203:Reproducibility of Results