Table 2. Patient characteristics sorted by institution.

	UM (n=136)		JHU (n=453)		p-valuea
	Mean	Median(Min, Max)	Mean	Median(Min, Max)
Age (years)	59.6	60(40, 7)	57.0	57(36, 73)	<0.001
PSA, ng/mL	4.76	4.55(0.3, 13)	4.56	4.4(0.4, 10.1)	0.63
PSA density, ng/mL/gm	0.10	0.096(0.012, 0.284)	0.10	0.099(0.007, 0.257)	0.60
PSA mass, μg	0.56	0.53(0.03, 1.61)	0.56	0.53(0.05, 1.78)	0.85
PSA mass density, μg/gm	0.01	0.011(0.001, 0.036))	0.01	0.012(0.0009, 0.056)	0.27
Prostate weight, gm	50.6	45(18, 146)	48.8	44.8(19.7, 194)	0.43
Tumor volume, cm3	0.75	0.35(0.004, 7.57)	0.69	0.38(0.003, 6.32)	0.92
	No. (%)		No. (%)		p-valueb
Race/ethnicity					<0.001
Non-Hispanic White	38 (27.9%)		352 (77.7%)
Non-Hispanic Black	17 (12.5%)		70 (15.5%)
Hispanic/Latino	78 (57.4%)		-
Other	3 (2.2%)		31 (6.8%)
BMIc					0.47
Normal	35 (25.7%)		125 (28.0%)
Overweight	69 (50.7%)		238 (53.2%)
Obese	32 (23.6%)		84 (18.8%)

Abbreviations: UM = The University of Miami; JHU = The Johns Hopkins University.

^a Kruskal-Wallis test was used in calculation of p-values for continuous variables.

^b Chi-square test was used in calculation of p-values for categorical variables.

^c Six patients had missing BMI values.