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Table 1 Characteristics of included studies

From: Off-clamp partial nephrectomy has a positive impact on short- and long-term renal function: a systematic review and meta-analysis

Study Design Country Age, mean Patients, no Surgical approach Tumor Sizea Follow-up off/on Level of evidence Quality Score
off on off on total off on(cm)
Guillonneau2003 [15] R France 60.6 60.0 12 16 28 LPN 1.9 2.5 12.2/1.21 m 3b 6
Kane2004 [16] R USA 62 52 12 15 27 LPN 2.2 3.0 4.3/4.3 m 3b 6
Kobayashi2008 [17] R Japan 60.3 51.8 5 5 10 LPN 2.4 2.0 1/1 m 4 5
Hong2009 [19] R Korea 55.5 54.8 17 16 33 LPN 2.1 3.3 26.1/31.3 m 3b 6
Koo2010 [20] R Korea 58.0 63.7 11 10 21 LPN 2.6 2.3 postoperati 3b 5
Thompson2010 [21] R USA 63 62 96 362 458 OPN,LPN 2.5 3.4 39.6/39.6 m 3b 5
Smith2011 [22] R USA 62 62 192 116 308 O + L + R 3.0 2.8 12/12 m 4 5
Petrasz2012 [23] R Poland 54.7 58.3 13 25 38 LPN 3.1 3.3 postoperative 3b 4
George2013 [25] R USA 59.2 59.4 150 289 439 LPN 2.7 3.3 6/6 m 3b 6
Kaczmarek2013 [27] RM USA 60.4 60.2 49 283 332 RPN NA 21/21 m 3b 6
Porpiglia2012 [24] R Italy 65.1 61.3 41 76 117 LPN 2.4 3.2 postoperative 4 7
Salevitz2015 [33] R USA 67 62 95 191 286 O + L + R 2.5 2.9 50.9/32.2 m 3b 5
Ener2016 [34] RM Turkey 53.0 54.4 12 22 34 RPN 3.3 3.2 3/3 m 3b 6
Wang2016 [35] P China 54.4 54.4 22 22 44 LPN 2.0 1.9 0.2/0.2 m 2b 8
Anderson2017 [36] R USA 58.5 56.1 50 50 100 RPN 3.1 3.6 9/9 m 3b 6
Rosen2017 [37] RM USA 60.0 61.5 41 82 123 RPN 1.8 2.0 9.2/9.2 m 3b 8
Verze2017 [38] R Italy 56.0 57.2 64 37 101 LPN 4.7 5.1 6/6 m 3b 7
Weizer2008 [18] R USA 57 53 36 25 61 LPN 1.9 1.9 10/12 m 3b 4
Hung2013 [26] R USA NA 81 272 353 LPN,RPN 3.4 2.9 postoperative 4 4
Lee2014 [31] R Korea 53.6 54.5 39 201 240 OPN 2.0 2.3 12/12 m 3b 4
Komninos2015 [32] R Korea 53 51 23 114 137 RPN 1.7 3.3 12/12 m 3b 4
T Tawatchi2018 [9] R Thailand 50.1 56.0 12 27 39 RPN 2.2 3.5 26/19 m 3b 4
Acar2014 [29] R Turkey 51.1 46.2 30 14 44 RPN 3.8 3.6 18.9/18.9 m 3b 7
Krane2013 [28] p USA 57.1 62.4 19 58 77 RPN 1.6 2.9 4.5/5.5 m 2b 4
Jabaji2014 [30] R USA 55 57 75 241 316 OPN 3.9 3.3 34.7/34.7 m 3b 4
  1. off = off-clamp partial nephrectomy; on = on-clamp partial nephrectomy; LPN = laparoscopic partial nephrectomy; OPN = open partial nephrectomy; RPN = robot-assisted partial nephrectomy; O + L + R = OPN + LPN + RPN; m = months
  2. R retrospective, P prospective, RM respective matched, NA data not available
  3. amean tumor size