1. Reliability of intraobserver and interobserver sonographic endometrial stripe thickness measurements 
Steven D Spandorfer, M.D., F Arrendondo-Soberon, M.D., J.R.Loret de Mola, M.D., R.F Feinberg, M.D. 
Fertility and Sterility 
Volume 70, Issue 1, Pages (July 1998)
DOI: /S (98)

2. Figure 1
(A) Intraobserver variability of the measurements for observer A (Spearman’s correlation coefficient, 0.956; P<0.0001) is demonstrated. (B) Intraobserver variability of the measurements for observer B (Spearman’s correlation coefficient, 0.945; P<0.0001) is demonstrated. (C) Interobserver variability of the measurements between the 2 observers (Spearman’s correlation coefficient, 0.899; P<0.0001) is demonstrated. EMS = endometrial stripe.
Fertility and Sterility  , DOI: ( /S (98) )