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Table 1 Baseline characteristics

From: Predictors of adverse pathologic features after radical prostatectomy in low-risk prostate cancer

Variables (n = 546) Median IQR
Age, year 64 59–69
BMI, kg/m2 24.1 22.3–25.7
Year of operation (n/%)
 ~ 2005 46 8.4
 2006~ 2009 365 66.8
 2010~ 2014 135 24.7
Type of operation (n/%)
 Open 146 26.7
 Robotic 400 73.3
Prostate volume measured by TRUS, ml 31.0 25.0–42.0
PSA, ng/ml 5.6 4.5–7.0
Number of biopsy core 12 12–12
Number of positive core 2 1–3
Percentage of positive core, % 16.7 8.3–25.0
Maximal percentage in each biopsy core, % 30.0 10.0–50.0
Prostate volume in specimen, ml 33.0 26–41.1
Tumor volume in specimen, ml 0.8 0.3–1.8
Tumor / Prostate ratio 0.03 0.01–0.06
Extracapsular extension (n/%) 199 36.4
Seminal vesicle invasion (n/%) 8 1.5
Positive surgical margin (n/%) 179 32.8
GS after radical prostatectomy (n/%)
 GS 6 (3 + 3) 336 61.5
 GS 7 (3 + 4) 143 26.2
 GS 7 (4 + 3) 48 8.8
 GS 8 (4 + 4) 13 2.4
 GS 9 or 10 6 1.1
GS upgrading (n/%) 210 38.5
Perineural invasion (n/%) 175 32.1
Lymphovascular invasion (n/%) 12 2.2
HGPIN (n/%) 308 56.4
  1. BMI=Body mass index; GS = Gleason score; HGPIN=High grade prostatic intraepithelial neoplasia; PSA = Prostate specific antigen; TRUS = Transrectal ultrasonography