Table 1.

Manually measured mistakes made in each task by experience group

Experience level	Contrast	Task	Median of the differences	95% confidence interval		P value
				Lower	Upper
Students	3D/HD–2D/4K	1	0	0	0	NA
Students	3D/HD–2D/4K	2	2	2	3	< 0.001
Students	3D/HD–2D/4K	3	0	0	0	NA
Students	3D/HD–2D/4K	4	0	0	0	0.0593
Experts	3D/HD–2D/4K	1	0	0	0	NA
Experts	3D/HD–2D/4K	2	1	0	3	0.265
Experts	3D/HD–2D/4K	3	0	0	0	NA
Experts	3D/HD–2D/4K	4	0	− 0.5	0	0.3458

NA not applicable

The P value was calculated using the non-parametric Wilcoxon test. P < 0.05 was considered significant. For task 1 and 3, the manually measured mistakes were not collected