Table 4.

Results for lesions in region L.

	Group P (n = 37)	Group R (n = 11)	P value
Mean decrease in Hb† (g/dL ± SD‡)	0.28 ± 0.57	0.27 ± 0.43	0.56
Mean procedure time (min ± SD)	58.0 ± 32.7	120.5 ± 58.8	0.002
Incidence of perforation, % (n)	0.0 (0)	0.0 (0)
Incidence of clip use, % (n)	13.5 (5)	27.3 (3)	0.28
Incidence of muscle injury, % (n)	5.4 (2)	18.2 (2)	0.18
Incidence of postoperative fever, % (n)	2.7 (1)	0.0 (0)	0.58
Incidence of postoperative bleeding, % (n)	5.4 (2)	18.2 (2)	0.18
Percentage of patients who resumed eating on the day after ESD, % (n)	100 (37)	81.8 (9)	0.008

^†Hb: hemoglobin. ^‡SD: standard deviation.