Table 4. Comparison between meta-analysis and other minimally invasive studies on partial nephrectomy for renal tumors >4 cm.
| Variables | Rais2008 [21] | Eng2009[22] | Simmons2009[23] | Porpiglia2010[24] | Sprenkle2012[20] | Meta-analysis |
| Procedure | Laparoscopic | Laparoscopic | Laparoscopic | Laparoscopic | Robotic andLaparoscopic | Robotic |
| Cases, N | 34 | 26 | 58 | 63/41¶ | 54 | 156 |
| Mean warm ischemic time, min (SD) | 21.9(13.7) | 30.3 (10.9) | 38 (11.9) | 25.7 (8.3) | 37 (31–41)# | 28(21–34)* |
| Conversion, % | NA | 15 | 4 | 7.3 | 13 | 7.0 |
| Positive margin, % | 5.3 | 3.8 | 6.5 | 6.5 | 4 | 3.5 |
| Intraoperative complication, % | 4.0 | NA | 7 | 7.3 | 19 | 7.0 |
| Postoperative complication, % | 37.0 | 42 | 24 | 26 | 33 | 9.8 |
| Major complication † , % | NA | 15 | 8.6 | 14.6 | 15 | 4.7 |
| Mean operation room time, min (SD) | NA | NA | NA | NA | NA | 319(138–200)* |
| Mean console time, min (SD) | 199.2(57.2) | 234(111) | 228 (78) | 154 (62) | NA | 189(176–202)* |
| Mean estimated blood loss, ml (SD) | 406.3(354.3) | 247(252) | 284 (302) | 230 (143) | 300 (144–438)# | 317(43–591)* |
| Hilar clamping, % | NA | NA | NA | 100 | 93 | 93.9 |
| Collecting system repair, % | NA | 88.5 | 90 | 43 | NA | 47.5 |
| Mean length of stay, day (SD) | 4.1(2.7) | NA | 3.5 (1.5) | 7 (3.5) | 3 (2–5)# | 3.8(1.9–5.7)* |
NA = data not available; SD = standard deviation;
¶
Complete data on complications were available for 41 patients;
*
mean(95% confidence interval);
#
median(interquartile range);
†
Clavien-Dino classification grade >3.