Table 1 Baseline Characteristics of Data Sets.

From: Deep learning-based decision support system for the diagnosis of neoplastic gallbladder polyps on ultrasonography: Preliminary results

Characteristics

Development Set

Test Set

Total

p

No. of Patients

437

98

535

 

No. of Images

5,171

885

6,056

 

Age (y)

52.2 ± 13.5 (21–53–87)

55.2 ± 12.5 (26–55–86)

52.7 ± 13.4 (21–54–87)

0.05

No. of Man Patients

198 [45.3]

37 [37.8]

235 [43.9]

0.17

No. of Patients with Nonneoplastic polyp

294 [67.3]

63 [64.3]

357 [66.7]

0.6

No. of Patients with Neoplastic polyp

144 [33.0]

35 [39.3]

179 [33.5]

 

Size of Polyp

12.2 ± 7.1 (4.1–10.4–47.2)

13.4 ± 6.9 (4–12.3–35)

12.4 ± 7.0 (4–10.6–47.2)

0.14

Size of Nonneoplastic Polyp

9.4 ± 3.6 (4.1–8.9–21.4)

9.9 ± 2.9 (4–9.9–15.4)

9.4 ± 3.5 (4–9.1–21.4)

0.27

Size of Neoplastic Polyp

18.1 ± 8.6 (4.3–16.0–47.2)

19.8 ± 7.5 (4.6–17.7–35)

18.4 ± 8.4 (4.3–16.4–47.2)

0.29

Development Set

Nonneoplastic polyp

Neoplastic polyp

 

No. of Patients

294

144

 

Age (y)

48.5 ± 12.5

59.7 ± 12.4

<0.001

No. of Man Patients

124 [42.2]

74 [51.4]

0.07

Size of Polyp

9.4 ± 3.6

18.1 ± 8.6

<0.001

Test Set

Nonneoplastic polyp

Neoplastic polyp

 

No. of Patients

63

35

 

Age (y)

51.1 ± 10.9

62.5 ± 11.9

<0.001

No. of Man Patients

17 [27.0]

20 [57.1]

0.07

Size of Polyp

9.9 ± 2.9

19.8 ± 7.5

<0.001

  1. Note.- Size of polyp was calculated from the one maximum value from each patients. Data in parentheses are minimum, median, maximum values, respectively. Data in brackets are percentage.