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Table 1 Patient and tumour characteristics, clinical data, and response outcome

From: Local tuning of radiomics-based model for predicting pathological response to neoadjuvant chemoradiotherapy in locally advanced rectal cancer

 

Original cohort

New cohort

p value

Number

59

88

 

Age

  

0.387

Years, median (range)

56.0 (34.0–74.0)

55.5 (29.0–73.0)

Sex—no. (%)

  

0.565

Male

47 (79.7)

63 (71.6)

Female

12 (20.3)

25 (28.4)

Tumor stage—no. (%)

   

cT stage

  

0.239

T2

6(10.2)

2 (2.3)

T3

34 (57.6)

61 (69.3)

T4

19 (32.2)

25 (28.4)

cN stage

  

0.365

N0

25 (42.4)

29(32.9)

N1

24 (40.7)

21(23.9)

N2

10(16.9)

38 (43.2)

Interval between MRI and start CRT

  

 < 0.05

Days, median (range)

14 (4–50)

13 (4–35)

Interval between end CRT and surgery

  

 < 0.05

RT Short Course: days, median (range)

10 (8–15)

9(5–15)

RT Long Coursea: days, median (range)

59(30–82)

67(30–108)

RT Course

  

 < 0.05

Short (5fr x 5 Gy)—no. (%)

19 (32.2)

10 (11.4)

Long (28fr × 1.8 Gy)—no. (%)

39 (67.8)

78 (88.6)

eMR scanner Strength

  

 < 0.05

1.5 T no (%)

32 (54.2)

 

3.0 T no (%)

27 (45.8)

88 (100.0)

TRG

  

 < 0.05

1—no. (%)

10 (16.9)

12 (13.6)

2–5—no. (%)

49 (83.1)

76 (86.4)

  1. aIn the long radiotherapy course, two more chemotherapy cycles were scheduled at the end of the radiotherapy before surgery