Table 5. Differences in average SDS (mm ² /min) between the M-loop and non-traction groups in experts and non-experts.

Operator		M-loop (n = 10)	Non-traction (n = 31)	P value
Expert	mean	38.9 ± 6.9	29.1 ± 3.2	0.099
	median	33.8	21.8
		Multiloop (n = 40)	Non-traction (n = 84)
Non-expert	mean	25.3 ± 3.1	16.5 ± 2.4	0.001
	median	19.5	13.3

M-loop, multi-loop