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Table 3 Cohen’s kappa coefficient for inter-observer agreement at offline analysis

From: Diagnostic efficacy of gel infusion sonography in post-menopausal bleeding

Endometrial category k* (95% confidence interval) Agreement percentage
Abnormality (yes/no) 0.85 (0.78–0.90) 91
polyp (yes/no) 0.71 (0.69–0.88) 89
Hyperplasia (yes/no) 0.41 (0.30–0.41) 65
Cancer (yes/no) 0.61 (0.61–0.77) 89
Total all four categories 0.59 (0.55–0.59) 82
Total all four categories with clips of high quality only 0.77 (71–84) 88
  1. *Cohen kappa analysis