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Table 3 Preoperative serum levels of CXCL8 (pg/ml) in relation to other variables for men who underwent radical prostatectomy and had available information on serum CXCL8 (n = 95)

From: The influence of prostatic Cutibacterium acnes infection on serum levels of IL6 and CXCL8 in prostate cancer patients

Total population (n = 95)
 Median serum CXCL8, pg/ml (min-max) 9.97 (3.36–155.53)   
By C. acnes category C. acnes + (n = 58) C. acnes- (n = 37)  
 Median serum CXCL8, pg/ml (min-max) 10.01 (5.05–130.93) 9.68 (3.36–155.53) p = 0.658a
Gleason sum Gleason 6 (n = 36) Gleason 3 + 4 (n = 41) Gleason 4 + 3 (n = 15) Gleason 8+ (n = 3)  
 Median serum CXCL8, pg/ml (min-max) 10.05 (4–155.53) 9.21 (3.36–83.2) 9.96 (5.95–16.07) 11.16 (9.41–12.14) p = 0.843a
Positive sugical margins No (n = 62) Yes (n = 33)  
 Median serum CXCL8, pg/ml (min-max) 10.01 (3.36–155.53) 9.41 (4.79–38.16) p = 0.344a
pT stage pT2 (n = 86) pT3 (n = 9)  
 Median serum CXCL8, pg/ml (min-max) 9.99 (3.36–155.53) 9.41 (6.24–20.53) p = 0.576a
PSA
By PSA quartile < 4.6 ng/ml ≥4.6, < 6.4 ng/ml ≥6.4, < 9.0 ng/ml ≥9 ng/ml  
 Median serum CXCL8, pg/ml (min-max) 9,68 (5,05-130,93) 10,03 (4,79-155,53) 8,93 (4–38,16) 10,65 (3,36-83,2) p = 0.646a
Non-parametric correlation
 Correlation coefficient 0.069     p = 0.505b
Age
By age quartile < 61.3 years ≥61.3, < 64.7 years ≥64.7, < 67.1 years ≥67.1 years  
 Median serum CXCL8, pg/ml (min-max) 10,09 (3,36-155,53) 10,09 (3,36-155,53) 9,21 (5,26-83,2) 11,16 (5,4-62,26)  
Non-parametric correlation
 Correlation coefficient 0.044     p = 0.674b
Prostate volume
By volume quartile 0–26 ml 27–33 ml 34–50 ml 51–138 ml  
 Median serum CXCL8, pg/ml (min-max) 10.28 (6.24–16.68) 8.89 (3.36–83.2) 10.8 (4–130.93) 9.68 (5.26–155.53) p = 0.468a
Non-parametric correlation
 Correlation coefficient 0.045     p = 0.681b
  1. ap-value fron Kruskal-Wallis Test/Mann-Whitney U Test; bp-value from Spearman correllation