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Table 1 demographic and perioperative characteristics between hernia group and no-hernia group

From: Incidence and risk factors of inguinal hernia occurred after radical prostatectomy-comparisons of different approaches

Characteristic hernia group
(N = 53)
no-hernia group
(N = 698)
total
(N = 751)
statistic
(t、W、χ2)
P
age-(years)
 mean ± sd 71.00 ± 5.59 68.57 ± 6.70 68.74 ± 6.65 t = −2.575 0.01020
 range 54–81 28–86 28–86   
BMI-(kg/m2)
 mean ± sd 23.34 ± 0.51 23.97 ± 2.96 23.96 ± 2.93 t = 0.300 0.765
 range 22.99–23.70 16.89–30.82 16.90–30.82   
previous abdominal operations -no.(%)
 yes 11 (20.8) 128 (18.4) 139 (18.6) χ2 = 0.182 0.670
 no 42 (79.2) 568 (81.6) 610 (81.4)   
diabetes mellitus history -no.(%)
 yes 11 (20.8) 88 (12.6) 99 (13.2) χ2 = 2.825 0.093
 no 42 (79.2) 608 (87.4) 650 (86.8)   
hypertension history -no.(%)a
 yes 25 (47.2) 274 (39.4) 299 (39.9) χ2 = 1.250 0.264
 no 28(52.8) 422 (60.6) 450 (60.1)   
previous hernia -no.(%)a
 yes 5 (9.4%) 31 (4.5) 36 (4.8) χ2 = 2.659 0.103
 no 48 (90.6) 664 (95.5) 712 (95.2)   
preoperative Gleasona
  < 7 17 (32.1) 131 (19.1) 148 (20.0) χ2 = 6.048 0.049
 7 25 (47.2) 340 (49.5) 365 (49.3)   
  > 7 11 (20.8) 216 (31.4) 227 (30.7)   
T-stage-no.(%)a
 T1 11 (20.8) 69 (10.0) 80 (10.8) χ2 = 10.174 0.038
 T2 32 (60.4) 394 (57.1) 426 (57.3)   
 T3 9 (17.0) 145 (21.0) 154 (20.7)   
 T4 1 (1.9) 80 (11.6) 81 (10.9)   
PLND-no.(%)a
 yes 31 (58.5) 423 (61.3) 454 (61.1) χ2 = 0.164 0.686
 no 22 (41.5) 267 (38.7) 289 (38.9)   
operative methods -no.(%)
 LRP 43 (81.1) 594 (85.2) 638 (84.8) χ2 = 8.442 0.038
 RALP 1 (1.9) 53 (7.6) 54 (7.2)   
 RRP 9 (17.0) 50 (7.2) 59 (7.9)   
operative approach -no.(%)a
 extraperitoneal 26 (49.1) 268 (38.5) 294 (39.1) χ2 = 2.404 0.301
 transperitoneal 27 (50.9) 429 (61.5) 456 (60.7)   
operative time-(min)
 median(P25, P75) 150.0 (120.0,215.0) 175.0 (130.0,210.0) 170 (130,210) W = 16,154 0.151
estimated blood loss-(ml)a
  < 500.0 24 (66.7) 311 (66.2) 335 (66.2) χ2 = 0.060 0.970
  < 1000.0 10 (27.8) 128 (27.2) 138 (27.3)   
  < 2000.0 2 (5.6) 31 (6.6) 33 (6.5)   
  1. SD Standard deviation, LRP Laparoscopic radical prostatectomy, RARP Robot-assisted laparoscopic radical prostatectomy, RRP Retropubic radical prostatectomy, PLND Pelvic lymph node dissection
  2. a some data missing
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