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Table 1 Primary characteristics of the included studies

From: Positive surgical margin is associated with biochemical recurrence risk following radical prostatectomy: a meta-analysis from high-quality retrospective cohort studies

Author

Year

Country

No. of patients

Recruitment period

Age

(years)

p-PSA

(ng/ml)

Follow-up (months)

Surgical approach

Wettstein et al. [35]

2017

Switzerland

371

2008–2015

Median (range)

63 (41–78)

Median (range)

6.79 (0.43–81.4)

Median (range)

28 (1–64)

NA

Xun et al. [6]

2017

China

172

2003–2014

Median (IQR)

68 (62–72)

Median (IQR)

16.1 (10.9–28.3)

Median (IQR)

46.4 (33.4–62.4)

NA

Meyer et al. [36]

2017

Germany

903

1992–2005

Median (IQR)

63 (59–66)

Median (IQR)

6.4 (4.6–9.0)

Median (IQR)

133 (97–157)

NA

Gandaglia et al. [37]

2017

Multi-centred

94

2011–2015

Median (IQR)

64.3 (57.1–68.9)

Median (IQR)

9.7 (5.1–17.5)

Median (IQR)

23.5 (18.7–27.3)

Robot-assisted RP

Shangguan et al. [33]

2016

China

172

2003–2014

Median (range)

68 (62–72)

Median (range)

16.1 (10.9–28.3)

Median (IQR)

46.4 (33.4–62.4)

Open and laparoscopic RP

Zhang et al. [34]

2016

China

168

2006–2011

Median (range)

69 (53–85)

Median (range)

13.31 (4.59–36.12)

Median (range)

68 (7–98)

Laparoscopic RP

Simon et al. [12]

2016

Multi-centres

411

2001–2013

Mean ± SD

61 ± 6.1

NA

Median

63

NA

Sevcenco et al. [38]

2016

Multi-centres

7205

2000–2011

Median (IQR)

61 (57–66)

Median (IQR)

6 (4–9)

Median (IQR)

27 (19–48)

NA

Pagano et al. [20]

2016

USA

180

1990–2011

Median (range)

63.7 (58.8–67.6)

Median (range)

9.1 (6.3–17.1)

Median (range)

26.7 (8.8–66)

NA

Moschini et al. [39]

2016

USA

1011

1987–2012

NA

Median

12.0

Median

211.2

NA

Mortezavi et al. [40]

2016

Switzerland

100

1999–2007

Mean ± SD

63.5 ± 6.5

Mean ± SD

9.6 ± 8.3

Median (range)

126 (60–176)

Laparoscopic RP

Mao et al. [41]

2016

China

106

2008–2009

Mean (range)

68.1 (48–83)

Mean (range)

25.1 (3.1–104.3)

Median (range)

69 (8–84)

Laparoscopic RP

Whalen et al. [29]

2015

USA

609

2005–2011

Mean ± SD

61.2 ± 7.3

Mean ± SD

6.8 ± 6.3

Median (range)

20.5 (1–80)

NA

Song et al. [42]

2015

Korea

2137

1988–2011

Median (IQR)

67 (63–71)

Median (IQR)

6.9 (4.7–11.2)

Mean (range)

39.4 (8–1834)

NA

Reeves et al. [43]

2015

Australia

1479

2005–2012

Median

62

NA

Median

14

NA

Hashimoto et al. [5]

2015

Japan

837

2006–2013

Median (range)

65 (39–78)

Median (range)

6.9 (3–47.4)

Median (range)

20.5 (1.3–91.3)

Robot-assisted RP

Alvin et al. [44]

2015

Singapore

725

2003–2013

Median (range)

62 (37–79)

Median (range)

7.9 (0.79–72.9)

Mean (range)

28.5 (6–116)

Robot-assisted RP

Touijer et al. [13]

2014

USA

369

1988–2010

Median (IQR)

62 (57–66)

Median (IQR)

8 (5–15)

Median

48

NA

Ritch et al. [45]

2014

USA

979

2003–2009

Median

62

NA

Median

47

Open and robot-assisted RP

Kang et al. [21]

2014

Korea

3034

2004–2011

Mean ± SD

65.9 ± 6.6

Mean ± SD

11.6 ± 12.2

Median

47

NA

Fairey et al. [14]

2014

USA

229

1987–2008

Median (range)

65 (41–83)

NA

Median (range)

174 (2.4–253.2)

NA

Turker et al. [46]

2013

Turkey

331

1993–2009

Mean ± SD

62.79 ± 6.4

Mean ± SD

11.1 ± 10.5

Mean ± SD

29.7 ± 33.2

NA

Sammon et al. [10]

2013

USA

794

1993–2010

Mean ± SD

63.4 ± 8.1

Mean ± SD

5.6 ± 3.6

Median (IQR)

26.4(12.2–54.6)

NA

Chen et al. [30]

2013

China

152

2004–2011

NA

NA

Median (range)

48 (12–87)

Laparoscopic RP

Sooriakumaran et al. [11]

2012

Sweden

944

2002–2006

Median (IQR)

62.2 (58.2–65.8)

Median (IQR)

6.4(4.8–9.0)

Median (IQR)

75.6(67.2–86.4)

Robot-assisted RP

Lu et al. [31]

2012

China

894

1993–1999

Median (IQR)

62 (57–66)

Median (IQR)

6.0 (4.5–8.6)

Median (IQR)

9.9 (6.1–11.3)

NA

Iremashvili et al. [47]

2012

USA

1444

2003–2010

Mean (range)

61.3 (56–66.3)

Mean (range)

5.7 (4.5–8.0)

Median (range)

43.2 (3–216)

Open and robot-assisted RP

Connolly et al. [48]

2012

Australia

160

1988–1997

Mean ± SD

63.1 ± 6.3

Median (IQR)

9.95 (6.0–21.4)

Median (IQR)

26.2 (5.5–37.3)

Robot-assisted RP

Busch et al. [49]

2012

Germany

1845

1999–2007

Mean ± SD

62.0 ± 5.9

Median (range)

26.3 (17.0–42.1)

Median (range)

56 (0–35)

Laparoscopic RP

Berge et al. [50]

2012

Norway

577

2002–2008

Mean (range)

61.5 (42–76)

Mean (range)

8.4 (0.3–31)

Median (range)

36 (3–72)

Laparoscopic RP

Lee et al. [51]

2011

Korea

1000

2003–2009

Median (range)

66 (37–82)

Median (range)

7.8 (0.1–261.8)

Mean

39.4

NA

Alenda et al. [23]

2011

France

1248

1998–2008

Mean (range)

63 (44–78)

Mean (range)

10.9 (0.9–134)

Median

23.4

NA

Fukuhara et al. [52]

2010

Japan

364

2000–2009

Median (range)

66 (52–78)

Median (range)

8.1 (1.7–77.7)

Median (range)

33 (10–109)

NA

Cho et al. [53]

2010

Korea

171

2005–2009

Mean (range)

64.4 (49–80)

NA

Mean (range)

23.3 (2–51)

NA

Alkhateeb et al. [26]

2010

Canada

1268

1992–2008

Mean ± SD

62.0 ± 6.6

Median (range)

6.2 (0.1–65.9)

Mean (range)

78.1 (3–192)

NA

Jeon et al. [54]

2009

Korea

237

1995–2004

Mean (range)

64.5 (44–86)

Mean (range)

11.5 (0.2–98)

Median (range)

21.6 (2–88)

NA

Schroeck et al. [55]

2008

USA

3194

1988–2007

Median (IQR)

62.6(57.2–67.9)

Median (IQR)

6.3(4.5–9.6)

Median

31.2

NA

Pavlovich et al. [56]

2008

USA

508

2001–2005

Mean ± SD

57.6 ± 6.7

Mean (range)

6.0 (0.3–27)

Median (range)

12 (2–52)

Laparoscopic RP

Hong et al. [57]

2008

Korea

372

2003–2007

Mean (range)

64.2 (37–72)

Mean (range)

8.7 (0.2–104.2)

NA

NA

Cheng et al. [8]

2005

Indiana

504

1990–1998

Mean (range)

62 (34–80)

NA

Mean (range)

44 (1.5–144)

NA

Shariat et al. [58]

2004

USA

630

1994–2002

Median (range)

60.9 (40–75)

Mean (range)

6.1 (0.1–99)

Median (range)

21.4 (1–101.3)

NA

  1. p-PSA preoperative prostate-specific antigen, SD standard deviation, IQR interquartile range, NA data not applicable