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Table 1 Clinical and tumour data of patients

From: Immunohistochemical expression of 8-oxo-7,8-dihydro-2′-deoxyguanosine in cytoplasm of tumour and adjacent normal mucosa cells in patients with colorectal cancer

 

Colorectal cancer

Colorectal cancer

Allred score negative

Allred score positive

p value

 

(n = 138)

(n = 134)

(n = 40)

(n = 98)

 

Gender

    

0.087c

 Females

55 (39.9 %)

55 (41 %)

20 (50 %)

35 (35.7 %)

 

 Males

83 (60.1 %)

79 (59 %)

20 (50 %)

63 (64.3 %)

 

Average age (year)

64 SD ±10

64 SD ±10

65 SD ±10

64 SD ±10

0.662d

Dukes pathology

    

0.819c

 A

30 (21.7 %)

29 (21.6 %)

10 (25 %)

20 (20.4 %)

 

 B

45 (32.6 %)

43 (32.1 %)

13 (32.5 %)

32 (32.7 %)

 

 C

63 (45.7 %)

62 (46.3 %)

17 (42.5 %)

46 (46.9 %)

 

TNM clinical stage

    

0.929c

 I

29 (21 %)

28 (20.9 %)

9 (22.5 %)

20 (20.4 %)

 

 II

43 (31.2 %)

41 (30.6 %)

12 (30 %)

31 (31.6 %)

 

 III

45 (32.6 %)

44 (32.8 %)

14 (35 %)

31 (31.6 %)

 

 IV

21 (15.2 %)

21 (15.7 %)

5 (12.5 %)

16 (16.4 %)

 

Tumour grade (n = 136a; n = 132b)

    

0.373c

 Low grade

108a (79.4 %)

106b (80.3 %)

33 (82.5 %)

75 (76.5 %)

 

 High grade

28a (20.6 %)

26b (19.7 %)

7 (17.5 %)

21 (21.4 %)

 

Lymph node status

    

0.388c

 Yes

63 (45.6 %)

62 (46.3 %)

17 (42.5 %)

46 (46.9 %)

 

 No

75 (54.4 %)

72 (53.7 %)

23 (57.5 %)

52 (53.1 %)

 

Distant metastases

    

0.389c

 Yes

21 (15.2 %)

21 (15.7 %)

5 (12.5 %)

16 (16.3 %)

 

 No

117 (84.8 %)

113 (84.3 %)

35 (87.5 %)

82 (83.7 %)

 

Blood vessel invasion

    

0.106c

 Yes

24 (17.4 %)

23 (17.2 %)

10 (25 %)

14 (14.3 %)

 

 No

114 (82.6 %)

111 (82.8 %)

30 (75 %)

84 (85.7 %)

 

Survival (n = 134)

     

 5 years (median survival in months, 95 % CI, N° deaths)

‐‐

59 (95 % CI --; 69 deaths)

-- (14 deaths)

49 (95 % CI 32.9–65.1; 55 deaths)

0.083e

 10 years (median survival in months, 95 % CI, N° deaths)

‐‐

59 (95 % CI 27.3–90.7; 80 deaths)

-- (95 % CI --; 16 deaths)

49 (95 % CI 32.9–65.1; 64 deaths)

0.036e

Median follow-up; range (months)

‐‐

169; 166.75–171.25; 86 deaths

n/a; 20 deaths

n/a; 66 deaths

0.111e

Allred score (8-oxodG)

    

n/a

 0

40 (29 %)

37 (27.6 %)

40 (100 %)

0

 

 3

6 (4.3 %)

6 (4.5 %)

0

6 (6.1 %)

 

 4

13 (9.4 %)

13 (9.7 %)

0

13 (13.3 %)

 

 5

13 (9.4 %)

13 (9.7 %)

0

13 (13.3 %)

 

 6

24 (17.4 %)

24 (17.9 %)

0

24 (24.5 %)

 

 7

22 (15.9 %)

22 (16.4 %)

0

22 (22.4 %)

 

 8

20 (14.5 %)

19 (14.2 %)

0

20 (20.4 %)

 
  1. Statistical tests were conducted between Allred positive and negative patients
  2. aIn 5 year survival group 136 out of 138 patients had data about tumour grade
  3. bIn long-term survival group 132 out of 134 patients had data about tumour grade
  4. cPearson chi-square test for association
  5. dIndependent t test procedure was used, including data which were normally distributed and met criteria of homogeneity variances
  6. eLog-rank)