Skip to main content

Table 2 Characteristics of patients with PDAC in grade 1 and grade 2/3 group

From: Preoperative prediction of pathological grade in pancreatic ductal adenocarcinoma based on 18F-FDG PET/CT radiomics

Characteristics

Training set

p value

Validation set

p value

Grade 1

(n = 29)

Grade 2/3

(n = 70)

Grade 1

(n = 13)

Grade 2/3

(n = 37)

Gender

0.936

  

0.764

Male

16 (55.2)

38 (54.3)

 

8 (61.5)

21 (56.8)

 

Female

13 (44.8)

32 (45.7)

 

5 (38.5)

16 (43.2)

 

Age (years)

57.45 ± 9.69

61.30 ± 10.66

0.096

61.08 ± 9.33

63.16 ± 9.13

0.485

Localization of tumor

0.090

  

0.107

Head-neck

24 (82.8)

46 (65.7)

 

4 (30.8)

16 (43.2)

 

Body-tail

5 (17.2)

24 (34.3)

 

9 (69.2)

21 (56.8)

 

PET/CT findings

SUVmax

3.87 (2.61, 6.40)

4.65 (3.63, 7.22)

0.084

4.65 (3.72, 7.56)

5.30 (3.74, 7.19)

0.938

SUVmean

2.60 (2.03, 4.26)

3.11 (2.40, 4.31)

0.216

3.03 (2.68, 5.00)

3.81 (2.46, 4.14)

0.782

MTV (ml)

6.34 (2.21, 13.18)

12.42 (5.12, 20.02)

0.025

10.46 (3.23, 14.94)

8.54 (2.08, 20.00)

0.868

TLG

13.69 (6.04, 47.59)

39.72 (17.08, 67.81)

0.018

31.70 (12.54, 63.96)

29.19 (9.69, 63.72)

0.748

Lymphatic metastasis

0.651

  

0.264

Present

18 (62.1)

40 (57.1)

 

4 (30.8)

18 (48.6)

 

Absent

11 (37.9)

30 (42.9)

 

9 (69.2)

19 (51.4)

 
  1. Continuous data were expressed as mean ± standard deviation or median, with first and third quartile in parentheses. Categorical variables were expressed as numbers, with percentages in parentheses