Table 1.
Clinical characteristics stratified by race (N=4456)
| White | Black | p value* | |
|---|---|---|---|
| No. of patients (%) | 2791 (63%) | 1665 (37%) | |
| Age in years at surgery, Median (IQR) | 64 (60, 67) | 61 (56, 65) | <0.001† |
| Year of surgery, Median (IQR) | 2005 (1999, 2010) | 2007 (2002, 2011) | <0.001† |
| PSA ng/mL, Median (IQR) | 6.2 (4.6, 9.3) | 7.0 (5.0, 10.9) | <0.001† |
| Body mass index kg/m2, Median (IQR)^ | 28.0 (25.4, 31.0) | 28.1 (25.1, 31.6) | 0.741† |
| Biopsy grade group, no. (%) | <0.001 | ||
| 1 | 1425 (51) | 753 (46) | |
| 2 | 677 (24) | 484 (29) | |
| 3 | 320 (11) | 202 (12) | |
| 4 | 259 (9) | 170 (10) | |
| 5 | 110 (4) | 46 (3) | |
| Clinical Stage, no. (%) | <0.001 | ||
| T1 | 1386 (55) | 1117 (69) | |
| T2 and above | 1150 (45) | 491 (31) | |
| Pathological grade group, no. (%) | <0.001 | ||
| 1 | 964 (35) | 450 (27) | |
| 2 | 988 (35) | 734 (44) | |
| 3 | 438 (16) | 302 (18) | |
| 4 | 216 (8) | 110 (7) | |
| 5 | 185 (6) | 69 (4) | |
| Extracapsular extension, no. (%) | 582 (21) | 300 (18) | 0.022 |
| Seminal vesicle invasion, no. (%) | 264 (9) | 193 (23) | 0.023 |
| Positive surgical margins, no. (%) | 1003 (36) | 756 (45) | <0.001 |
| Lymph node involvement, no. (%) | 0.288 | ||
| Negative | 1774 (64) | 1075 (65) | |
| Positive | 50 (2) | 39 (2) | |
| Node dissection not performed | 967 (35) | 551 (33) |
*
p value assessed by chi squared test unless otherwise specified
†
p value assessed by rank sum test
^
BMI was available on 4111 men