Table 3 Subgroup analyses for total procedure times in terms of various clinical characteristics.

From: Randomized study of two endo-knives for the traction-assisted endoscopic submucosal dissection of early esophageal squamous cell carcinoma

 

D-group

I-group

P value

Lesion size

Small lesion

38.0 (± 14.4)

27.4 (± 11.0)

0.02

Large lesion

108.9 (± 36.0)

66.5 (± 15.7)

0.02

Location of lesions

Upper third

45.0 (± 19.1)

35.7 (± 12.9)

0.51

Middle third

64.4 (± 39.7)

34.8 (± 21.8)

0.02

Lower third

65.5 (± 56.2)

40.6 (± 20.7)

0.51

Endoscopists

A

70.3 (± 45.1)

42.7 (± 21.8)

0.04

B

39.6 (± 23.2)

21.0 (± 7.8)

0.11

C

58.0 (± 11.0)

38.3 (± 17.6)

0.29

Sedation

Conscious sedation

52.4 (± 33.3)

36.4 (± 20.9)

0.07

General anesthesia

104.0 (± 47.5)

40.5 (± 18.5)

0.13

Study period

Early

72.0 (± 40.2)

44.3 (± 22.9)

0.05

Later

48.4 (± 37.4)

29.8 (± 15.6)

0.15

  1. Values are mean (± standard deviation).
  2. D-group DualKnife group, I-group ITknife nano group.
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