Table 1.

Biopsy and TRUS results

Biopsy results	Previously negative biopsy (%)	Active surveillance (%)	P-value
% Positive	27/78 (34.6%)	42/49 (85.7%)	0.0001
% Positive in AZ	17/78 (21.8%)	17/49 (34.7%)	0.1492
% TZ involved	8/78 (10.3%)	5/49 (10.2%)	1
% AZ only	1/78 (1.3%)	2/49 (4%)	0.56
% AZ findings changed risk stratification	3/78 (3.8%)	3/49 (6.1%)	0.68
% Only TZ	0/78 (0%)	0/49 (0%)	1
% Cores involved	4.5/26 (17.3%)	3.1/26 (11.9%)	0.0423
Clinically insignificant cancer*	10/27 (37%)	25/49 (51%)	0.3366
Gleason ≥ 7 anywhere	12/27 (44.4%)	12/49 (24.5%)	0.1215
Gleason ≥ 7 in AZ	9/27 (33.3%)	5/49 (10.2%)	0.0273
TRUS results
Hypoechoic lesion anywhere	26/78 (33.3%)	12/49 (24.5%)	0.3248
Hypoechoic lesion in AZ	8/78 (10.3%)	0/49 (0%)	0.0228
Hypoechoic lesion in AZ + Cancer in AZ	5/78 (6.4%)	0/49 (0%)	0.1555

*Gleason 6(3 + 3), ≤ 3 cores, ≤ 50% of any core positive.