Table 1 Clinical factors of the training and validation sets

Gender (Male/Female)

22/20

63/14

0.001

10/3

22/2

0.321

Age (Median [range]), year

32(2–62)

58(33–78)

0.000

28(10–69)

59(36–78)

0.000

HbsAg (Positive/Negative)

1/41

60/17

0.000

1/12

19/5

0.000

HcsAg (Positive/Negative)

0/42

0/77

–

0/13

0/24

–

AFP (>  400 ng/mL/≤ 400 ng/mL)

0/42

22/55

0.000

1/12

5/19

0.394

Diameter (Median [range]), milimetre

42(12–87)

44 (11–164)

0.982

39(16–134)

39(21–204)

0.888

Shape (Round/Not round)

30/12

55/22

1.000

9/4

20/4

0.413

Central scar (Present/Absent)

19/23

8/69

0.000

2/11

2/22

0.602

Degeneration (Present/Absent)

5/37

48/29

0.000

3/10

14/10

0.082

Fat deposition (Present/Absent)

0/42

1/76

1.000

0/13

0/24

–

Calcification (Present/Absent)

0/42

2/75

0.539

0/13

0/24

–

Capsule-like rim (Present/Absent)

1/41

21/56

0.000

0/13

5/19

0.140

Dysmorphic vessels (Present/Absent)

23/19

30/47

0.123

5/8

10/14

1.000

Enhancement pattern

0.000

0.000

 Early enhancement + washout

4

69

–

4

22

–

 Early enhancement + no washout

37

2

–

9

0

–

 Other patterns

1

6

–

0

2

–