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. 2020 Jul 21;8(8):E1021–E1030. doi: 10.1055/a-1190-7880

Table 3. Procedure-related outcomes.

Pocket-creation method Conventional method Non-adjusted P value IPTW-adjusted P value OR (95 % CI)
En bloc resection 40/40
(100 %)		 47/50
(94 %)		 0.25 1 0.19 1
6.6 (0.31–141.39)
R0 resection 35/40
(88 %)		 39/50
(78 %)		 0.28 1 0.27 2
1.92 (0.6–6.15)
Median dissection time
(range, minutes)		 53.5
(16–123)		 63
(7–300)		 0.036 3 0.025 2
2.25 (1.11–4.58)
Median dissection speed
(ranges, mm 2 /minutes) 4 		19.3
(5.8–53)		 15.9
(3.1–50.4)		 0.020 3 0.013 2
2.53 (1.22–5.25)
Horizontal margin 0.99 2 1.0 2
1.0 (0.24–4.06)

  • Negative

 36
(90 %)		 45
(90 %)

  • Positive/unclear

 1/3
(10 %)		 1/4
(10 %)
Vertical margin 0.038 1 0.045 2
8.66 (1.05–71.61)

  • Negative

 39
(98 %)		 41
(82 %)

  • Positive/unclear

 1/0
(2 %)		 7/2
(18 %)
pVM0 resection/ shallow lesion 4 35/36
(97 %)		 39/43
(91 %)		 0.37 1
(adenoma, intramucosal carcinoma and slightly invasive submucosal carcinoma < 1000 µm) (11, 24, 1) (15, 20, 8)
pVM0 resection/ deeply invasive submucosal carcinoma ≥ 1000 µm 4/4
(100 %)		 2/7
(29 %)		 0.06 1
Endoscopist 1,0

  • Expert 5

23 (58 %) 30 (60 %)

  • Non expert 6

17 (43 %) 20 (40 %)
Adverse events 0.22 1 0.68 2
0.69 (0.12–4.03)

  • Intraprocedural perforation

 1 (3 %) 4 (8 %)

  • Delayed bleeding

 0 (0 %) 1 (3 %)

OR, odds ratio; CI, confidence interval; VM, vertical margin.

1

Fisherʼs exact test

2

Generalized estimating equations

3

Mann–Whitney U test

4

Measured adequate specimen case

5

ESD experience before study 5 or more cases

6

ESD experience before study less than 5 cases