Table 3.

Correlations between the total scores of the items

	Observer A	Observer B	r	p
Instrument handling	10.0 (2.8)	9.9 (3.0)	0.98	< 0.001
Tissue handling	9.4 (2.3)	9.1 (2.4)	0.86	< 0.001
Total score	19.4 (4.9)	19.0 (5.2)	0.96	< 0.001
Total errors	2.1 (3.2)	1.9 (3.2)	0.99	< 0.001
Total assessment score	21.4 (7.1)	20.9 (7.5)	0.98	< 0.001

This is calculated with Pearson correlation, on a 2-tailed significance level of p < 0.01