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Table 1 Main characteristics of the selected studies

From: Comparison of the prognosis and recurrence of apparent early-stage ovarian tumors treated with laparoscopy and laparotomy: a meta-analysis of clinical studies

Citation Mean patient age (years) Number of patients Body mass index Upstaging rate Duration of operation (min) Intraoperative blood loss (ml) Hospital stay (days) Number of pelvic lymph node dissections Number of para-aortic lymph node dissections
  Laparoscopy Laparotomy Laparoscopy Laparotomy Laparoscopy Laparotomy Laparoscopy Laparotomy Laparoscopy Laparotomy
Liu 2014 50.9 75 NA 20.0 % 209.71 ± 17.57 200.50 ± 20.62 197.14 ± 98.48 345.00 ± 165.95 16.3 ± 6.2 21.9 ± 4.9 18.23 ± 3.27 19.03 ± 3.15 NA NA
Koo 2013 47.6 77 23.5 29.9 % 192.9 ± 73.5 224.1 ± 85.4 697.9 ± 396.9 972.6 ± 827.8 13.7 ± 5.4 13.1 ± 4.1 26.8 ± 8.5 27.8 ± 13.2 17.7 ± 10.1 21.2 ± 11.2
Lee 2011 43.9 113 23.0 26.5 % 227.6 ± 105.8 184.6 ± 61.4 230.4 ± 183.6 474.8 ± 329.2 6.4 ± 2.6 12.4 ± 5.5 23.5 ± 9.3 22.8 ± 10.2 9.9 ± 7.4 4.8 ± 4.1
Park 2008 (1) 44.9 52 22.9 21.2 % 220.7 ± 82.7 274.7 ± 63.2 240.0 ± 228.3 568.2 ± 451.7 8.9 ± 6.1 14.5 ± 5.6 27.2 ± 9.7 33.9 ± 14.5 6.6 ± 6.2 8.8 ± 8.1
Park 2008 (2) 46.2 36 23.5 19.4 % 303.8 ± 84.9 290.4 ± 120.8 231.2 ± 117.9 505.3 ± 279.8 9.4 ± 4.1 14.1 ± 4.2 13.7 ± 5.6 19.3 ± 10.1 8.9 ± 7.1 6.4 ± 3.9
Ghezzi 2007 58.4 34 24.9 29.45 377.0 ± 47.0 272.0 ± 81.0 250.0 (50–1,000) 400 (150–1,000) 3.0 ± 2.5 7.0 ± 2.5 25.2 ± 9.3 25.1 ± 5.8 6.5 ± 3.9 7.0 ± 4.5
Lécuru 2006 49.2 148 NA 19.0 % NA NA NA NA NA NA NA NA NA NA
Chi 2005 49.0 50 25.1 NA 321.0 ± 64.0 276.0 ± 68.0 235.0 ± 138.0 367.0 ± 208.0 3.1 ± 0.7 5.8 ± 2.6 12.3 ± 4.9 14.7 ± 5.7 6.7 ± 2.5 9.2 ± 5.0
  1. (1) and (2) represent different studies by the same first author