title: Measurement of upper extremity volume in women after axillary dissection for breast cancer.
abstract: OBJECTIVE
  To determine if 2 methods of calculating upper extremity volume (using arm circumferences) can substitute for water displacement volumetry.
  
  
  METHODS
  Interrater and test-retest reliability and limits of agreement for volume measures.
  
  
  METHODS
  University.
  
  
  METHODS
  Twenty-five women at risk for lymphedema who had undergone axillary lymph node dissection surgery for breast cancer.
  
  
  METHODS
  Circumference and volume measurements of both upper extremities were taken by 2 physical therapists at an initial visit and by 1 of the therapists 1 week later.
  
  
  METHODS
  Intraclass correlation coefficients (ICCs) were calculated to analyze measurement reliability. Pearson's product-moment correlation coefficient (r) was used to evaluate the relationship between volumetry and calculated truncated cone volumes. Limits of agreement were calculated to determine the level of agreement between the 2 measurement methods.
  
  
  RESULTS
  Interrater and test-retest reliability ICCs for circumferential and volumetric data were .99 and .99, respectively. Pearson's r values were .93 and .97 for the single truncated cone and the summed truncated cone volume calculations, respectively. Limits of agreement (mean +/- 2 standard deviations) were -52 +/- 334mL and -40 +/- 234mL, respectively, between volumetry and the single truncated cone and summed truncated cone calculations.
  
  
  CONCLUSIONS
  Calculated and volumetric measurements in this population are both reliable and closely related, but do not agree with each another, and thus should not be used interchangeably.
authors.affiliation: School of Rehabilitation Sciences, Faculty of Medicine, University of British Columbia, Vancouver, Canada.
authors.forename: A M
authors.initials: AM
authors.lastname: Megens
authors.forename: S R
authors.initials: SR
authors.lastname: Harris
authors.forename: C
authors.initials: C
authors.lastname: Kim-Sing
authors.forename: D C
authors.initials: DC
authors.lastname: McKenzie
mesh_terms: D000328:Adult; D000368:Aged; D000886:Anthropometry / Q000379:methods*; D001132:Arm; D001823:Body Composition; D001943:Breast Neoplasms / Q000150:complications / Q000534:rehabilitation*; D005260:Female; D006801:Humans; D008197:Lymph Node Excision; D008209:Lymphedema / Q000175:diagnosis* / Q000209:etiology; D008875:Middle Aged; D015588:Observer Variation; D015203:Reproducibility of Results