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Table 1 Baseline patient characteristics at diagnosis and surgery

From: Comparison of urinary and sexual patient-reported outcomes between open radical prostatectomy and robot-assisted radical prostatectomy: a propensity score matched, population-based study in Victoria

Factor

ORP

RARP

P value

N

1047 (27.4%)

2779 (72.6%)

 

Year of diagnosis

   

2009–2012

3 (0.3%)

29 (1.0%)

0.05

2013

31 (3.0%)

64 (2.3%)

 

2014

184 (17.6%)

507 (18.2%)

 

2015

226 (21.6%)

671 (24.1%)

 

2016

308 (29.4%)

750 (27.0%)

 

2017

279 (26.6%)

731 (26.3%)

 

2018

16 (1.5%)

27 (1.0%)

 

Method of diagnosis

   

TRUS prostate biopsy

516 (49.3%)

1160 (41.7%)

 < 0.001

TURP

16 (1.5%)

35 (1.3%)

 

Transperineal prostate biopsy

511 (48.8%)

1575 (56.7%)

 

Other

4 (0.4%)

9 (0.3%)

 

PSA at diagnosis (ng/mL)

   

< 4.8

212 (20.2%)

768 (27.6%)

 < 0.001

4.81–6.4

238 (22.7%)

690 (24.8%)

 

6.41–9

288 (27.5%)

652 (23.5%)

 

 > 9

280 (26.7%)

593 (21.3%)

 

Missing

29 (2.8%)

76 (2.7%)

 

ISUP Grade Group at diagnosis

   

1

159 (15.2%)

417 (15.0%)

 < 0.001

2

412 (39.4%)

1301 (46.8%)

 

3

237 (22.6%)

578 (20.8%)

 

4

130 (12.4%)

272 (9.8%)

 

5

104 (9.9%)

181 (6.5%)

 

Missing

5 (0.5%)

30 (1.1%)

 

NCCN risk category

   

Low risk

89 (8.5%)

254 (9.1%)

 < 0.001

Intermediate risk

660 (63.0%)

1897 (68.3%)

 

High risk

256 (24.5%)

550 (19.8%)

 

Metastatic

36 (3.4%)

47 (1.7%)

 

Missing

6 (0.6%)

31 (1.1%)

 

Diagnosing institution type

   

Public

345 (33.0%)

415 (14.9%)

 < 0.001

Private

667 (63.7%)

2180 (78.4%)

 

Missing

35 (3.3%)

184 (6.6%)

 

Diagnosing institution location

   

Metropolitan

668 (63.8%)

2156 (77.6%)

 < 0.001

Regional

334 (31.9%)

426 (15.3%)

 

Interstate/overseas

8 (0.8%)

102 (3.7%)

 

Missing

37 (3.5%)

95 (3.4%)

 

IRSAD category

   

1—lowest

123 (11.7%)

236 (8.5%)

 < 0.001

2

161 (15.4%)

285 (10.3%)

 

3

191 (18.2%)

362 (13.0%)

 

4

210 (20.1%)

673 (24.2%)

 

5—highest

358 (34.2%)

1216 (43.8%)

 

Missing

4 (0.4%)

7 (0.3%)

 

Age at surgery, median (IQR)

65.6 (60.3, 69.6)

65.0 (59.6, 69.3)

0.047

Years between diagnosis and surgery, median (IQR)

0.2 (0.1, 0.3)

0.2 (0.1, 0.3)

 < 0.001

Years between surgery and follow-up, median (IQR)

1.0 (1.0, 1.1)

1.0 (1.0, 1.1)

0.86

PSA at surgery (ng/ml)

   

< 4.8

202 (19.3%)

774 (27.9%)

 < 0.001

4.81–6.4

240 (22.9%)

661 (23.8%)

 

6.41–9

286 (27.3%)

658 (23.7%)

 

> 9

298 (28.5%)

632 (22.7%)

 

Missing

21 (2.0%)

54 (1.9%)

 

Pathological T score

   

T2

489 (46.7%)

1363 (49.0%)

 < 0.001

T3

472 (45.1%)

1362 (49.0%)

 

T4

4 (0.4%)

2 (0.1%)

 

Missing

82 (7.8%)

52 (1.9%)

 

Surgery Gleason Score

   

6 or less

60 (5.7%)

98 (3.5%)

 < 0.001

7

771 (73.6%)

2301 (82.8%)

 

8

61 (5.8%)

114 (4.1%)

 

9

147 (14.0%)

241 (8.7%)

 

10

1 (0.1%)

0

 

Missing

7 (0.7%)

25 (0.9%)

 

ISUP grade group at surgery

   

1

136 (13.0%)

357 (12.8%)

 < 0.001

2

430 (41.1%)

1261 (45.4%)

 

3

306 (29.2%)

835 (30.0%)

 

4

80 (7.6%)

147 (5.3%)

 

5

91 (8.7%)

156 (5.6%)

 

Missing

4 (0.4%)

23 (0.8%)

 

Surgical margins

   

Absent

668 (63.8%)

2175 (78.3%)

 < 0.001

Present

356 (34.0%)

566 (20.4%)

 

Missing

23 (2.2%)

38 (1.4%)

 

Surgical institution type

   

Public

412 (39.4%)

402 (14.5%)

 < 0.001

Private

634 (60.6%)

2370 (85.3%)

 

Missing

1 (0.1%)

7 (0.3%)

 

Surgical institution location

   

Metropolitan

749 (71.5%)

2599 (93.5%)

 < 0.001

Regional

297 (28.4%)

173 (6.2%)

 

Interstate/overseas

0 (0.0%)

3 (0.1%)

 

Missing

1 (0.1%)

4 (0.1%)

 

Surgeon year of specialisation

   

1974–1990

139 (13.3%)

633 (22.8%)

 < 0.001

1991–2000

430 (41.1%)

312 (11.2%)

 

2001–2006

90 (8.6%)

799 (28.8%)

 

2007–2009

185 (17.7%)

434 (15.6%)

 

2010–2018

156 (14.9%)

568 (20.4%)

 

Missing

47 (4.5%)

33 (1.2%)

 

Surgeon years since specialisation

   

0–6

167 (16.0%)

631 (22.7%)

 < 0.001

7–10

169 (16.1%)

630 (22.7%)

 

11–16

181 (17.3%)

576 (20.7%)

 

17–26

339 (32.4%)

321 (11.6%)

 

27–44

143 (13.7%)

588 (21.2%)

 

Missing

48 (4.6%)

33 (1.2%)

 
  1. All continuous variables used a two-sample t-test. All categorical variables used a Pearson’s chi-squared test. P values exclude missing data
  2. TRUS = Transrectal ultrasound, TUR P = Transurethral resection of the prostate, PSA = Prostate-Specific Antigen, ISU P = International Society of Urological Pathology, NCCN = National Comprehensive Cancer Network, IRSAD = Index of Relative Socioeconomic Advantage and Disadvantage
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BMC Urology

ISSN: 1471-2490

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