Table 2.

Intra-annotator consistency and inter-annotator consistency between novice surgeon annotators and expert surgeon annotators

Category	Intra-annotator (Novice)		Inter-annotator (Novice–Novice)		Inter-annotator (Expert–Novice)
	Dice score	IOU	Dice score	IOU	Dice score	IOU
Overall	0.94 (0.03)	0.89 (0.04)	0.91 (0.05)	0.84 (0.09)	0.89 (0.06)	0.81 (0.09)
Metastatic extent
Single	0.95 (0.02)	0.91 (0.03)	0.92 (0.06)	0.85 (0.09)	0.90 (0.06)	0.83 (0.09)
Multiple	0.94 (0.02)	0.88 (0.04)	0.92 (0.04)	0.86 (0.07)	0.89 (0.05)	0.81 (0.09)
Extensive	0.92 (0.03)	0.86 (0.06)	0.88 (0.05)	0.79 (0.08)	0.86 (0.05)	0.76 (0.08)
Metastatic location
Peritoneum	0.93 (0.03)	0.88 (0.05)	0.91 (0.06)	0.84 (0.10)	0.89 (0.06)	0.81 (0.10)
Single	0.95 (0.02)	0.90 (0.03)	0.91 (0.09)	0.84 (0.13)	0.90 (0.08)	0.82 (0.12)
Multiple	0.94 (0.02)	0.88 (0.04)	0.93 (0.03)	0.88 (0.05)	0.91 (0.05)	0.84 (0.07)
Extensive	0.92 (0.03)	0.86 (0.06)	0.88 (0.05)	0.79 (0.08)	0.86 (0.05)	0.76 (0.08)
Omentum	0.94 (0.01)	0.88 (0.02)	0.92 (0.05)	0.88 (0.07)	0.88 (0.05)	0.80 (0.08)
Bowels	0.95 (0.02)	0.90 (0.04)	0.90 (0.03)	0.82 (0.04)	0.88 (0.04)	0.79 (0.06)
Mesentery	0.95 (0.03)	0.90 (0.05)	0.95 (0.02)	0.91 (0.04)	0.93 (0.05)	0.87 (0.09)
Liver surface	0.96 (0.01)	0.92 (0.02)	0.93 (0.04)	0.88 (0.07)	0.91 (0.04)	0.84 (0.07)
Uterus	0.96 (0.02)	0.92 (0.04)	0.89 (0.03)	0.80 (0.05)	0.88 (0.04)	0.78 (0.06)

Data were expressed in mean (±standard deviation, SD).

IOU intersection-over-union.