Skip to main content

Table 1 Patient characteristics

From: Factors influencing warm ischemia time in robot-assisted partial nephrectomy change depending on the surgeon’s experience

   All cases All cases by TH 1st period 2nd period 3rd period
   N = 174 N = 114 N = 38 N = 38 N = 38
Age, years (median [IQR])   64 (56–70) 64 (58–70) 62.4 (58–68) 65.5 (59–70) 64 (55–70)
Sex (%) Male 129 (74.1) 85 (74.6) 28 (73.7) 32 (84.2) 25 (65.8)
  Female 45 (25.9) 29 (25.4) 10 (26.3) 6 (15.8) 13 (34.2)
BMI, kg/m2 (median [IQR])   24.5 (22.5–26.7) 24.4 (22.0–26.6) 24.2 (21.5–25.5) 24.6 (22.5–27.4) 24.6 (21.1–26.7)
Laterality (%) Right 107 (61.5) 69 (60.5) 26 (68.4) 26 (68.4) 17 (44.7)
  Left 67 (38.5) 45 (39.5) 12 (31.6) 12 (31.6) 21 (55.3)
Diameter, mm (median [IQR])   29 (22–35) 32 (25–41) 26 (20–30) 33.5 (27–42) 39.5 (30–47)
RENAL nephrometry score (median [IQR])   7 (5–8) 7 (5–8) 5 (4–7) 7 (6–8) 8 (7–9)
R (median [IQR])   1 (1–1) 1 (1–1) 1 (1–1) 1 (1–1) 1 (1–2)
E (median [IQR])   2 (1–2) 2 (1–2) 1 (1–2) 2 (1–2) 2 (1–2)
N (median [IQR])   2 (1–3) 3 (1–3) 1 (1–3) 3 (2–3) 3 (3–3)
L (median [IQR])   1 (1–3) 1 (1–3) 1 (1–2) 2 (1–3) 2 (1–3)
Preoperative eGFR, mL/min (median [IQR])   67.6 (55.8–75.5) 69.4 (58.7– 76.4) 75.2 (65.2–78.0) 64.7 (55.7–75.0) 68.2 (54.1–75.8)
POM 1 eGFR, mL/min (median [IQR])   63.4 (52.5–75.9) 63.9 (53.9–77.5) 67.9 (62.2–82.2) 64.9 (52.8–7.3) 55.4 (46.7–67.6)
Clinical T (%) 1a 147 (84.5) 87 (76.3) 37 (97.4) 30 (78.9) 20 (52.6)
  1b 27 (15.5) 27 (23.7) 1 (2.6) 8 (21.1) 18 (47.4)
  1. IQR interquartile range; BMI body mass index; RENAL radius, exophytic/endophytic, nearness of tumor to collecting system, anterior/posterior, location relative to polar line; eGFR estimated glomerular filtration rate; POM postoperative month; T size of the primary tumor and whether it has invaded nearby tissue; TH high-volume surgeon in our hospital