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Table 2 Perioperative and prognosis data of patients in this study

From: Comparison of robot-assisted retroperitoneal laparoscopic adrenalectomy versus retroperitoneal laparoscopic adrenalectomy for large pheochromocytoma: a single-centre retrospective study

Variable RLA (n = 32) RALA (n = 19) p value
Intraoperative parameters
 HI 18(56.2) 5(26.3) 0.038
 Operating time (min) 165.0 ± 69.5 166.3 ± 54.0 0.944&
 EBL (mL) 200(80,300) 100(50,200) 0.042§
 Transfusion [n (%)] 7(21.9) 1(5.3) 0.238
Postoperative data
 Overall morbidity [n (%)] 9(28.1) 6(31.6) 0.794
 Severe morbidity [n (%)](Clavien III/IV) 2(6.25) 1(5.3) 0.6379
 CVD morbidity 6(18.8) 2(10.5) 0.702
 Duration of anesthetic use(days) 3.78 ± 1.601 2.95 ± 1.682 0.084 &
 Time to oral food(days) 2(1.25, 3) 1(1, 2) 0.027§
 Time to ambulation(days) 2(1.25, 2) 1(1, 2) 0.034§
 Time to removal of drainage(days) 5(4, 5) 4(3, 5) 0.002§
 Postoperative hospitalization days 6(5, 7) 5(5, 6) 0.02§
Follow-up data
 Duration of follow-up 31.2(20, 41) 26.6(19, 34)  
 BP improvement ratio (n%) 27(90.0) 16(88.9) 0.7144
  1. Continuous normally distributed variables were expressed as the mean ± standard deviation (SD); Continuous non-normally distributed variables were expressed as the median (interquartile range); categorical variables are expressed as the number (percentage). Independent sample t-test was used to compare the differences between the means of two continuous normally distributed variables and Mann-Whitney U test was used to compare the differences between the means of two continuous non-normal distribution variables. Chi-square test was used to compare the differences between the categorical variables
  2. & Independent sample t-test, § Mann-Whitney U test, BP Blood pressure, CVD Cardiovascular disease, EBL Estimated blood loss, HI Hemodynamic instability, RLA Retroperitoneal laparoscopic adrenalectomy, RARLA Robotic assisted retroperitoneal laparoscopic adrenalectomy
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