Table 1

Characteristics of study subjects

WhitesBlacksTotal
Number of subjects46949518
Number with prostate cancer27330
Number with positive family history43750
Age, nonprostate cancer
n43946485
 Mean (SD)63.7 (9.1)59.8 (10.8)a63.3 (9.4)
 Median (range)64 (34–93)59.5 (39–81)63 (34–93)
log10 (PSA), nonprostate cancer
n43746483
 Mean (SD)0.04 (0.40)0.12 (0.37)b0.04 (0.40)
 Median00.080.02
 Range−1.70, 1.31−0.62, 0.89−1.70 1.31
PSA
 Median1.011.201.05
 Range0.02, 20.700.24, 7.700.02, 20.70
  • a The difference in the mean age between the whites and blacks was statistically significant (P = 0.008).

  • b The difference in the mean log10 PSA between the whites and blacks was statistically significant, after adjusting for age (P = 0.03).