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Table 3 Level of pair-wise agreement among four observers assessing ultrasonographic features of polycystic ovaries

From: Assessment of ultrasonographic features of polycystic ovaries is associated with modest levels of inter-observer agreement

  Concordance Correlation Coefficient Kappa Statistic
Observer Pair Follicle Count Largest Follicle Ovarian Volume Average Follicle Pattern Corpus Luteum Average
1,2 0.63 0.88 0.86 0.79 0.66 0.90 0.78
1,3 0.18 0.27 0.80 0.42 0.58 0.76 0.67
1,4 0.27 0.86 0.84 0.66 0.76 0.86 0.81
2,3 0.16 0.43 0.75 0.44 0.51 0.80 0.65
2,4 0.48 0.86 0.67 0.67 0.73 0.83 0.78
3,4 0.08 0.34 0.63 0.35 0.54 0.83 0.69
Average 0.30 0.61 0.76 0.55 0.63 0.83 0.73
  1. Observer Pair 1,4 represent measurements made by reproductive endocrinologists, Observer Pair 2,3 represent measurements made by radiologists.