Table 4. Correlation between outcome variables.

Group/variable	Novice trials (n=36)	Intermediate trials (n=32)	Expert trials (n=30)	Total trials (n=98)
SP vs. DC	0.51 vs. 0.01	0.45 vs. 0.01	0.63 vs. <0.001	0.62 vs. <0.001
SP vs. AIT	−0.22 vs. 0.20	−0.54 vs. <0.001	−0.51 vs. 0.01	−0.52 vs. <0.001
DC vs. AIT	−0.376 vs. 0.02	−0.63 vs. <0.001	−0.56 vs. <0.001	−0.52 vs. <0.001

Values are presented as Pearson’s correlation coefficient r and P. P was compared as Pearson’s correlation. Number (n) indicates amount of trials. One trial data of intermediate 6 was lost due to system breakdown. All other trials were fully recorded and analyzed. AIT, average intersegmental time. Average time passed between each segmental visit. DC, diagnostic completeness. Number of visualized segments divided by total number of segments. SP, structured progress. A score from 0–18 points. One point was given every time the operator proceeded from one segment to the immediate succeeding segment.