Table 3 Patient characteristics of three cohorts.

From: Lymph node metastasis prediction of papillary thyroid carcinoma based on transfer learning radiomics

Characteristics

Main cohort

Independent testing set 1

Independent testing set 2

LNM status

P value

LNM status

P value

LNM status

P value

Yes

No

Yes

No

Yes

No

Age (mean ± SD)

39.3 ± 11.5

44.8 ± 11.4

<0.0001

43.1 ± 11.7

46.4 ± 10.5

0.0046

41.7 ± 11.9

45.0 ± 12.3

0.0415

Sex

–

–

<0.0001

–

–

0.0022

–

–

0.0067

 Male

142

145

–

70

34

–

75

68

–

 Female

261

465

 

147

117

 

143

227

 

Tumor diameter (mm)

15.0 ± 8.7

9.1 ± 5.3

<0.0001

15.3 ± 9.2

11.5 ± 7.0

<0.0001

12.6 ± 8.4

9.5 ± 6.0

<0.0001

Number of lesions

1

1

–

4.1 ± 2.3

3.9 ± 2.0

0.042

1

1

–

Kwak TIRADS

  

0.027

  

0.9404

  

0.782

 4A

6.6%

18.4%

 

6.3%

9.9%

–

3.2%

0.7%

–

 4B

32.1%

42.8%

–

26.4%

36.0%

–

5.5%

7.8%

–

 4C

45.2%

33.7%

–

41.4%

45.9%

–

64.7%

64.7%

–

 5

16.1%

5.1%

–

25.9%

8.1%

–

26.6%

26.8%

–

Blood markers

 TSH

2.2 ± 1.3

2.3 ± 2.0

0.6149

2.8 ± 5.2

2.3 ± 1.4

0.5437

3.0 ± 6.9

2.6 ± 4.0

0.9104

 TGab

49.2 ± 151.9

59.1 ± 162.2

0.1187

106.5 ± 255.9

47.9 ± 151.5

0.0074

63.4 ± 172.0

101.1 ± 217.6

0.5553

 TG

35.6 ± 68.0

28.20 ± 66.22

<0.0001

51.4 ± 94.4

30.9 ± 67.7

0.0274

36.4 ± 77.1

16.6 ± 28.8

0.0912

 TPOAB

62.5 ± 193.9

59.2 ± 179.5

0.4127

61.2 ± 168.0

74.8 ± 205.1

0.644

56.7 ± 165.9

97.6 ± 236.0

0.5989

Total

403

610

 

217

151

 

218

295

 
 

1013

 

368

 

513

    
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