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8% and 91.7%, respectively. The positive predictive values and negative predictive values were 88.8% and 70.1%, respectively. Receiver operating characteristic analysis showed cut-off value to be 2 and area under the curve to be 0.823. Hysteroscopic and histologic grading showed moderate agreement (kappa index = 0.529). CONCLUSION Our hysteroscopic scoring system has a high sensitivity and specificity for chronic endometritis and hopefully can reduce interobserver variability. Future clinical studies are warranted to confirm the val