Table 3 Matching factors between m-EMR and ESD group and outcomes after propensity score matching
m-EMR(n = 77) | ESD(n = 77) | P value | |
|---|---|---|---|
Variables matched between groups | |||
Patient-related variables | |||
Age, y (mean ± SD) | 50.3 ± 11.2 | 50.6 ± 10.6 | 0.883 |
Sex, male/female | 46/31 | 44/33 | 0.744 |
Lesion-related variables | |||
Lesion size, mm (mean ± SD) | 5.9 ± 1.9 | 6.3 ± 2.4 | 0.280 |
Lesion size group, n (%) | 0.316 | ||
< 10 mm | 70(90.9%) | 66 (85.7%) | |
≥ 10 mm | 7(9.1%) | 11(14.3%) | |
Location, (U / Middle / L) | 5/42/30 | 6/43/28 | 0.918 |
Histopathological grade(G1/G2) | 66/11 | 70/7 | 0.316 |
Invasion layer, (M/SM) | 16/61 | 14/63 | 0.684 |
Endoscopic morphology, n (%) | 0.602 | ||
Ia | 5(6.5%) | 5(6.5%) | |
Ib | 58(75.3%) | 52(67.5%) | |
II | 13(16.9%) | 17(22.1%) | |
III | 1(1.3%) | 3(3.9%) | |
Outcomes | |||
Procedure time, min | 0.000* | ||
Mean ± SD | 9.1 ± 4.4 | 16.0 ± 7.9 | |
Median (range) | 8(3–26) | 14(6–40) | |
En bloc resection, n (%) | 76(98.7%) | 77(100%) | 1.000 |
Complete resection(R0), n (%) | 70(90.9%) | 72(93.5%) | 0.548 |
Procedure-related adverse events, n (%) | 2(2.6%) | 2(2.6%) | 1.000 |
Operation involving incomplete resectiona, no.(%) | 1(1.3%) | 2(2.6%) | 1.000 |