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. Author manuscript; available in PMC: 2018 Jul 1.
Published in final edited form as: Urology. 2017 Apr 10;105:129–135. doi: 10.1016/j.urology.2017.03.042

Table 1.

Baseline patient characteristics by prostate cancer status from biopsy result

Prostate Cancer Prostate Cancer Grade
No PC PC p Low-grade PC
(Gleason 6)
High-grade PC
(Gleason 7–10)
p
No. Patients 496 (51%) 483 (49%) 246 (51%) 237 (49%)
Age, mean ± SD 62.3 ± 6.1 62.5 ± 6.4 0.52* 62.1 ± 6.3 63.0 ± 6.5 0.13*
Race 0.001† 0.07†
Non-black 244 (49%) 172 (36%) 78 (32%) 94 (40%)
Black 252 (51%) 311 (64%) 168 (68%) 143 (60%)
PSA (ng/ml), median (IQR) 5.5 (4.3, 7.2) 6.4 (4.9, 9.4) <0.001 5.8 (4.6, 7.6) 7.4 (5.3, 12.9) <0.001
DRE 0.007† <0.001†
Normal 396 (80%) 351 (72%) 205 (83%) 145 (61%)
Abnormal 100 (20%) 133 (28%) 41 (17%) 92 (39%)
TRUS volume (cc), median (IQR) 49 (35, 68) 34 (26, 50) <0.001 37 (26, 54) 31 (25, 44) 0.002
Gleason Score
 6 0 246 51%) 246 (100%) 0
 3+4 0 130 (27%) 0 130 (55%)
 4+3 0 56 (12%) 0 56 (24%)
 8−10 0 51 (10%) 0 51 (22%)
Family history of PC 0.64† 0.45†
 No 260 (52%) 248 (51%) 124 (50%) 124 (52%)
 Yes 96 (19%) 105 (22%) 50 (20%) 55 (23%)
 Unknown 140 (28%) 130 (27%) 72 (29%) 58 (25%)
BMI (kg/m2), mean ± SD 29.7 ± 5.1 29.8 ± 5.8 0.81* 29.4 ± 5.8 30.3 ± 5.7 0.09*
% Body Fat, mean ± SD 28.6 ± 6.0 28.3 ± 6.7 0.49* 27.4 ± 6.9 29.3 ± 6.4 0.002*
Waist Circumference (cm), mean ± SD 105. 9 ± 14.1 104.7 ± 14.7 0.18* 103.0 ± 14.2 106.5 ± 15.0 0.010*

Table cells are n (%) unless otherwise specified

PC = prostate cancer; SD = standard deviation, IQR = interquartile range, BMI = body mass index, DRE = previous digital rectal exam, PSA = prostate-specific antigen, TRUS = transrectal prostate volume

p-value calculated using *t-test, †chi-squared test, or rank sum test