Table 2: Overall results of this study.

Group P
( )
Group R
( )
value

Mean decrease in Hb (g/dL ± SD) 0.56
Mean procedure time (min ± SD) <0.001
Incidence of perforation, % ( )0.0 (0)2.6 (1)0.25
Incidence of clip use, % ( )20.0 (10)48.7 (19)0.004
Incidence of muscle injury, % ( )8.0 (4)25.6 (10)0.023
Incidence of postoperative fever, % ( )4.0 (2)7.7 (3)0.45
Incidence of postoperative bleeding, % ( )4.0 (2)7.7 (3)0.45
Percentage of patients who resumed eating on the day after ESD, % ( )84.0 (42)82.1 (32)0.81

Hb: hemoglobin. SD: standard deviation.