Retrospective Study
Copyright ©The Author(s) 2019.
World J Gastroenterol. Jan 28, 2019; 25(4): 457-468
Published online Jan 28, 2019. doi: 10.3748/wjg.v25.i4.457
Table 1 Baseline characteristics and therapeutic outcomes in all patients who underwent gastric endoscopic submucosal dissection
All patients (n = 597)
Age, mean (SD), yr72.3 (8.815)
Sex, male, n (%)414 (69.3)
BMI, mean (SD), yr22.6 (3.424)
Comorbidity, n (%)379 (63.5)
Hypertension307 (51.4)
Diabetes mellitus114 (19.1)
Renal failure17 (2.8)
Coronary artery diseases142 (23.8)
Longitudinal location, n (%)
Upper90 (15.1)
Middle250 (41.9)
Lower257 (43.0)
Macroscopic findings, n (%)
Depressed275 (46.1)
Non-depressed322 (53.9)
Pathological findings, n (%)1
Differentiated578 (96.8)
Undifferentiated19 (3.2)
Depth of invasion, n (%)
Mucosa530 (88.8)
Submucosa67 (11.2)
LDA intake, n (%)154 (25.8)
Continuous LDA95 (16.4)
Continuous single-LDA56 (9.3)
DAPT (LDA with clopidogrel), n (%)59 (9.9)
Continuous LDA on DAPT, n (%)39 (6.5)
Specimen size, median (IQR), mm32.9 (24-40)
Complete resection, n (%)557 (93.3)
Curative resection, n (%)524 (87.8)
Postoperative bleeding, n (%)41 (6.9)
Delayed bleeding16 (2.7)
Table 2 Comparison of characteristics among patients receiving low-dose aspirin in the continuous low-dose aspirin group and the discontinuous low-dose aspirin group
Continuous LDA (n = 95)Discontinuous LDA (n = 59)P value
Age, mean (SD), yr75.5 (6.841)75.7 (7.684)0.856
Sex, male, n (%)71 (74.7)46 (78.0)0.701
BMI, mean (SD), yr22.7 (3.395)23.1 (3.079)0.382
Comorbidity, n (%)
Hypertension70 (73.7)39 (66.1)0.364
Diabetes mellitus32 (33.7)21 (35.6)0.862
Renal failure7 (7.4)4 (6.8)> 0.99
Coronary artery diseases78 (82.1)42 (71.2)0.161
Longitudinal location, n (%)
Upper18 (18.9)7 (11.9)0.429
Middle40 (42.1)24 (40.7)
Lower37 (39.0)28 (47.5)
Macroscopic findings, n (%)
Depressed31 (32.6)21 (35.6)0.729
Non-depressed64 (67.4)38 (64.4)
Table 3 Comparison of therapeutic outcomes among patients receiving low-dose aspirin in the continuous low-dose aspirin group and the discontinuous low-dose aspirin group
Continuous LDA (n = 95)Discontinuous LDA (n = 59)P value
Pathological findings, n (%)1
Differentiated94 (98.9)58 (98.3)> 0.99
Undifferentiated1 (1.1)1 (1.7)
Depth of invasion, n (%)
Mucosa80 (84.2)52 (88.1)0.637
Submucosa15 (15.8)7 (11.9)
Specimen size, median (IQR), mm30 (25-39)33 (25-41.5)0.944
Complete resection, n (%)91 (95.8)57 (96.6)> 0.99
Curative resection, n (%)85 (89.5)54 (91.5)0.785
Postoperative bleeding, n (%)15 (15.8)5 (8.5)0.225
Table 4 Comparison of characteristics adjusted among patients receiving single-low-dose aspirin in the continuous low-dose aspirin group and the discontinuous low-dose aspirin group
Continuous LDA (n = 56)Discontinuous LDA (n = 39)P value
Age, mean (SD), yr76.5 (7.628)74.8 (5.961)0.255
Sex, male, n (%)37 (66.1)32 (82.1)0.105
BMI, mean (SD), yr22.2 (3.029)23.6 (2.958)0.025
Comorbidity, n (%)
Hypertension41 (73.2)24 (61.5)0.266
Diabetes mellitus13 (23.2)13 (33.3)0.351
Renal failure3 (5.4)1 (2.6)0.642
Coronary artery diseases41 (73.2)25 (64.1)0.372
Longitudinal location, n (%)
Upper8 (14.3)4 (10.3)0.643
Middle28 (50.0)17 (43.6)
Lower20 (35.7)18 (46.2)
Macroscopic findings, n (%)
Depressed20 (35.7)16 (41.0)0.669
Non-depressed36 (64.3)23 (59.0)
Table 5 Comparison of therapeutic outcomes among patients receiving single- low-dose aspirin in the continuous low-dose aspirin group and the discontinuous low-dose aspirin group
Continuous LDA (n = 56)Discontinuous LDA (n = 39)P value
Pathological findings, n (%)1
Differentiated55 (98.2)39 (100)> 0.99
Undifferentiated1 (1.8)0 (0)
Depth of invasion, n (%)
Mucosa50 (89.3)33 (84.6)0.542
Submucosa6 (10.7)6 (15.4)
Specimen size, median (IQR), mm28 (22-37.3)31 (25-43.5)0.440
Complete resection, n (%)53 (94.6)37 (94.9)> 0.99
Curative resection, n (%)52 (92.9)34 (87.2)0.480
Postoperative bleeding, n (%)6 (10.7)4 (10.3)> 0.99
Table 6 Comparison of characteristics among patients receiving dual antiplatelet therapy in the continuous low-dose aspirin group and the discontinuous low-dose aspirin group
Continuous LDA (n = 39)Discontinuous LDA (n = 20)P value
Age, mean (SD), yr74.7 (7.743)77.4 (7.665)0.216
Sex, male, n (%)34 (87.2)14 (70.0)0.159
BMI, mean (SD), yr23.5 (3.765)22.4 (3.232)0.273
Comorbidity, n (%)
Hypertension29 (74.4)15 (75.0)> 0.99
Diabetes mellitus19 (48.7)8 (40.0)0.589
Renal failure4 (10.3)3 (15.0)0.679
Coronary artery diseases37 (94.9)17 (85.0)0.325
Longitudinal location, n (%)
Upper10 (25.6)3 (15.0)0.726
Middle12 (30.8)7 (35.0)
Lower17 (43.6)10 (50.0)
Macroscopic findings, n (%)
Depressed11 (28.2)5 (25.0)> 0.99
Non-depressed28 (71.8)15 (75.0)
Table 7 Comparison of therapeutic outcomes among patients receiving dual antiplatelet therapy in the continuous low-dose aspirin group and the discontinuous low-dose aspirin group
Continuous LDA (n = 39)Discontinuous LDA (n = 20)P value
Pathological findings, n (%)1
Differentiated39 (100)19 (95.0)0.339
Undifferentiated0 (0)1 (5.0)
Depth of invasion, n (%)
Mucosa30 (76.9)19 (95.0)0.141
Submucosa9 (23.1)1 (5.0)
Specimen size, median (IQR), mm34 (29.5-40.0)35 (24.3-36.3)0.373
Complete resection, n (%)38 (97.4)20 (100)> 0.99
Curative resection, n (%)33 (84.6)20 (100)0.09
Postoperative bleeding, n (%)9 (23.1)1 (5.0)0.141