Table 2.

Causes for diagnostic discordance with ground truth

	Optical observation		Digital observation
Evaluated features	Distribution of discordance events according to type % (n)	Percentage of discordances per total number of events % (n)	Distribution of discordance events according to type % (n)	Percentage of discordances per total number of events % (n)
Nuclear features	69.1% (29)	11.6% (29)	59.4% (22)	8.8% (22)
Overestimation of PTC-nuclei	40.5% (17)	6.8% (17)	27.0% (10)	4.0% (10)
Underestimation of PTC-nuclei	28.6% (12)	4.8% (12)	32.5% (12)	4.8% (12)
NIFTP/PTC distinction	11.9% (5)	2.0% (5)	18.9% (7)	2.8% (7)
Inflammation	9.5% (4)	1.6% (4)	13.5% (5)	2.0% (5)
Invasion	2.4% (1)	0.4% (1)	2.7% (1)	0.4% (1)
Others	7.1% (3)	1.2% (3)	5.4% (2)	0.8% (2)
Total	100.0% (42)	16.8% (42)	100.0% (37)	14.8% (37)