Table 4.

Multi-loop traction device procedure (Expert endoscopist vs. Trainee endoscopist [n = 12]) in the ex vivo pilot study

	Expert (n = 6)	Trainee (n = 6)	p value	M-ESD (Total) (n = 12)
Successful MLTD attachment rate (number of successful MLTD attachment/number of attempts for MLTD attachment) (%)	100 (6/6)	75 (6/8)	0.47	85.7 (12/14)
Finally successful MLTD attachment rate (%)	100 (6/6)	100 (6/6)	NS	100 (12/12)
Rate of specimen retrieval (%)	100 (6/6)	100 (6/6)	NS	100 (12/12)
MLTD attachment time (min); median (IQR)	2.0 (1.3–2.8)	3.0 (2.3–3)	0.31	2.5 (2–3)
MLTD extraction time (min); median (IQR)	1 (1–1)	1 (1–1.8)	0.14	1.0 (1–1)

MLTD, multi-loop traction device; M-ESD, Multi-loop traction device-assisted ESD; IQR, interquartile range