Rectal Tumour Staging with Endorectal Ultrasound: Is There Any Difference between Western and Eastern European Countries?

Table 1

Overall accuracy of T-staging throughout the whole study period (2006–2012).

	Group I; ( = 67)	Group II; ( = 33)	Group III; ( = 77)
(y)uT-(y)pT correspondence	72%	64%	34%
Kappa coefficient	0.482	0.390	0.019
Overstaging	16%	27%	57%
Understaging	12%	9%	9%