Retrospective Cohort Study
Copyright ©The Author(s) 2020.
World J Gastroenterol. Mar 21, 2020; 26(11): 1172-1184
Published online Mar 21, 2020. doi: 10.3748/wjg.v26.i11.1172
Figure 1
Figure 1 Flow diagram of the study selection process.
Figure 2
Figure 2 Mirrored histogram of propensity scores. A: Before matching; B: After matching, showing the distributions of laparoscopic gastrectomy (lap, blue-bar) and robotic gastrectomy (robo, green-bar).