title: Reliability of intraobserver and interobserver sonographic endometrial stripe thickness measurements.
abstract: OBJECTIVE
  To determine the intraobserver and interobserver reliability of endometrial stripe thickness measurements in women undergoing controlled ovarian hyperstimulation.
  
  
  METHODS
  Prospective blinded study.
  
  
  METHODS
  Tertiary care, university hospital.
  
  
  METHODS
  Sixty-three patients undergoing controlled ovarian hyperstimulation and being monitored with transvaginal ultrasound were studied.
  
  
  METHODS
  None.
  
  
  METHODS
  Intraobserver and interobserver variability of endometrial stripe thickness measurements between 2 blinded observers, with 2 observations made by each observer.
  
  
  RESULTS
  A statistically significant correlation was detected between the 2 measurements of each observer. The mean (+/-SD) interobserver difference between the average of the 2 measurements performed by both observers was 1.02 +/- 0.82 mm. A statistically significant correlation between the measurements of the 2 observers was detected. For both observers A and B, who used < or =6 mm as an abnormal endometrial thickness, an excellent level of agreement was detected between the 2 measurements made on each patient. When comparing the average values obtained by the 2 observers for each of the patients, an excellent level of agreement was detected.
  
  
  CONCLUSIONS
  There is an excellent correlation between intraobserver and interobserver measurements of endometrial stripe thickness.
authors.affiliation: Department of Obstetrics and Gynecology, University of Pennsylvania Medical Center, Philadelphia, USA.
authors.forename: S D
authors.initials: SD
authors.lastname: Spandorfer
authors.forename: F
authors.initials: F
authors.lastname: Arrendondo-Soberon
authors.forename: J R
authors.initials: JR
authors.lastname: Loret de Mola
authors.forename: R F
authors.initials: RF
authors.lastname: Feinberg
mesh_terms: D000328:Adult; D004717:Endometrium / Q000000981:diagnostic imaging*; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D015588:Observer Variation; D010062:Ovulation Induction; D011446:Prospective Studies; D014463:Ultrasonography