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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