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. 2009 Apr 15;10(3):535–549. doi: 10.1093/biostatistics/kxp009

Table 1.

Description of the 3 cohorts BM (N = 1268), UM (N = 503), and RTOG (N = 615), categorical variable shown as number (frequency), and continuous variables as mean (standard deviation)

Variable
BM UM RTOG
(N = 1268) (N = 503) (N = 615)
Event 190 (15.0) 85 (16.9) 42 (6.8)
T-stage 1 431 (34.0) 163 (32.4) 348 (56.6)
2 792 (62.5) 290 (57.7) 253 (41.1)
3, 4 45 (3.5) 50 (9.9) 14 (2.3)
Gleason < 7 902 (71.1) 276 (54.9) 421 (68.4)
7 252 (19.9) 188 (37.4) 156 (25.4)
> 7 114 (9.0) 39 (7.7) 38 (6.2)
Hormonal therapy 170 (13.4) 44 (8.8) 47 (7.6)
ln(iPSA + 0.1) (ln(ng/mL)) 2.16 (0.84) 2.23 (0.92) 2.00 (0.61)
Age (years) 72.7 (6.5) 69.0 (7.1) 68.0 (7.0)
Time to recurrence (years) 5.03 (2.71) 3.82 (2.49) 4.61 (2.00)
Time to last contact (years) 5.91 (3.30) 6.21 (3.41) 5.92 (2.03)