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Insights into Imaging

Table 4 Interobserver agreement between three readers for the recorded preoperative continuous and dichotomous imaging variables in 357 endometrial cancer patients

From: MRI-assessed tumor-free distance to serosa predicts deep myometrial invasion and poor outcome in endometrial cancer

Continuous variables

ICC (95% CI**)

iTFD (mm)

0.73 (0.67–0.77)

DOI (mm)

0.37 (0.30–0.43)

APD (mm)

0.87 (0.80–0.91)

Dichotomous variables

Overall kappa (95% CI)

iTFD < 6 mm

0.59 (0.52–0.65)

DOI ≥ 5 mm

0.29 (0.22–0.36)

APD ≥ 17 mm

0.80 (0.75–0.85

iDMI

0.41 (0.34–0.47)

  1. iTFD, tumor-free distance to serosa based on imaging findings; DOI, depth of invasion; APD, anteroposterior tumor diameter; iDMI, deep (≥ 50%) myometrial invasion based on standard imaging reading; CI, confidence interval; ICC, intraclass correlation coefficient, estimated using mixed linear model
  2. **Estimated using bootstrapping
  3. Overall kappa was estimated using the mean pairwise kappa of all possible pairs of readers
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