Table 1.

Clinical, sociodemographic, and lifestyle characteristics of African and European Americans

	African Americans		European Americans
	n = 855		n = 945
	median	IQR	median	IQR	P-value1
Age (years)	62	(56, 67)	64	(59, 70)	< 0.0001
	n	%	n	%	P-value2
Site
North Carolina	396	47.0	447	53.0	0.68
Louisiana	459	48.0	498	52.0
Aggressiveness3
Low	403	43.4	525	56.6	< 0.01
Intermediate	285	50.5	279	49.5
High	167	54.2	141	45.8
Previous PSA test
No	282	68.5	130	31.6	< 0.0001
Yes	573	41.3	815	58.7
Previous DRE
No	174	63.7	99	36.3	< 0.0001
Yes	681	44.6	846	55.4
BMI (kg/m2)
< 18.5	11	57.9	8	42.1	< 0.05
18.5 – 24.9	180	54.6	150	45.5
25.0 – 29.9	336	43.9	430	56.1
30 – 39.9	289	47.1	325	52.9
≥ 40.0	39	54.9	32	45.1
Relative diagnosed <60 years old
No	664	45.5	796	54.5	< 0.0001
Yes	119	60.7	77	39.3
Health insurance before diagnosis
No	124	73.4	45	26.6	< 0.0001
Yes	725	44.7	896	55.3
Poverty Index4
Below	50	75.8	16	24.2	< 0.0001
Borderline	216	73.7	77	26.3
Above	589	40.9	852	59.1
Education
< High School	246	72.8	92	27.2	< 0.0001
High School	296	53.1	261	46.9
College	254	39.2	394	60.8
Professional	58	22.7	198	77.3
Married
No	269	63.4	155	36.6	< 0.0001
Yes	586	42.6	790	57.4
Smoker
Never	263	43.6	340	56.4	< 0.0001
Current	179	67.8	85	32.2
Former	413	44.3	520	55.7

Abbreviations: IQR, interquartile range; PSA, prostate specific antigen; DRE, digital rectal examination; BMI, body mass index

Due to rounding, percentages may not add to 100

¹Mann-Whitney-Wilcoxon test

²Chi-squared test

³Cases classified as low aggressive (Gleason score <7, stage ≤T2, PSA <10ng/ml), high aggressive (Gleason score ≥8; PSA ≥20 ng/ml, or Gleason score=7 if stage ≥ T3), or intermediate aggressive (all others)

⁴Based on 2004 poverty thresholds by the US Census Bureau