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Table 1 Association between different patient and cancer-specific variables with the pre-operative CRP value

From: Validation of CRP as prognostic marker for renal cell carcinoma in a large series of patients

Variable

CRP <4 mg/l

CRP 4–10 mg/l

CRP >10 mg/l

p-value

Test

Age, mean (95% CI)

60.9 (59.9 - 61.9)

62.1 (60.4 - 63.8)

63.4 (62.4 - 64.5)

0.005

ANOVA

Sex

   

0.28

chi-square

female

225 (36.5%)

51 (31.3%)

124 (32.5%)

  

male

391 (63.5%)

112 (68.7%)

258 (67.5)

  

Side

   

0.81

chi-square

right

325 (52.8%)

86 (52.8%)

193 (50.5%)

  

left

286 (46.5%)

77 (47.2%)

187 (49.0%)

  

bilateral

4 (0.7%)

0

2 (0.5%)

  

Type of surgery

   

<0.001

chi-square

Radical nephrectomy

408 (66.2%)

130 (79.8%)

342 (89.8%)

  

Partial nephrectomy

208 (33.8%)

33 (20.2%)

39 (10.2%)

  

Stage

   

<0.001

chi-square

pT1a

284 (46.6%)

58 (35.8%)

39 (10.4%)

  

pT1b

164 (26.9%)

40 (24.7%)

55 (14.7%)

  

pT2

44 (7.2%)

15 (9.3%)

44 (11.7%)

  

pT3a

66 (10.8%)

23 (14.2%)

78 (20.8%)

  

pT3b/c

49 (8.2%)

26 (16.0%)

142 (37.9%)

  

pT4

2 (0.3%)

0

17 (4.5%)

  

LN metastasis1

13 (2.1%)

5 (3.1%)

62 (16.4%)

<0.001

chi-square

Pulmonal/visceral metastasis1

18 (2.9%)

14 (8.6%)

114 (30.0%)

<0.001

chi-square

Grade

   

<0.001

chi-square

G1

144 (23.8%)

30 (18.9%)

26 (7.0%)

  

G2

416 (68.8%)

110 (69.2%)

212 (56.7%)

  

G3

45 (7.4%)

18 (11.3%)

127 (34.0%)

  

G4

0

1 (0.6%)

9 (2.4%)

  

Histological subtype

   

0.08

chi-square

non ccRCC

86 (14.3%)

24 (14.9%)

36 (9.7%)

  

ccRCC

516 (85.7%)

137 (85.1%)

336 (90.2%)

  
  1. 1at time of renal surgery. Abbreviations: CRP = C reactive protein, RCC = renal cell carcinoma, ccRCC = clear-cell RCC, LN = lymph node.