Table 1.

Distribution of characteristics by case–control status among participants from the NMHS

CovariateControls (n = 906)Cases (n = 871)Pa
ContinuousMean (SD)Mean (SD)
Age, y64.34 (8.61)66.23 (8.81)<0.001
BMI, kg/m228.98 (4.59)28.73 (4.64)0.255
WHR1.02 (0.07)1.02 (0.07)0.538
Natural log prostate volume3.83 (0.51)3.61 (0.46)<0.001
Categoricaln (%)n (%)
Ancestry
 African American80 (8.83)107 (12.28)0.020
 European787 (86.87)741 (85.07)0.305
 East Asian3 (0.03)1 (0.01)0.336
 Hispanic12 (1.32)5 (0.57)0.143
 Other24 (2.65)17 (1.95)0.347
Family history of PC0.259
 No721 (79.58)674 (77.38)
 Yes185 (20.42)197 (22.62)
Statin use0.192
 No559 (61.70)511 (58.67)
 Yes347 (38.30)360 (41.33)
Diabetes status0.498
 No784 (86.53)744 (85.42)
 Yes122 (13.47)127 (14.58)

NOTE: Prostate volume data were missing for 30 controls and 8 cases.

Abbreviation: PC, prostate cancer.

  • aP values for continuous variables were based on t test assuming unequal variance. P values for categorical variables are based on Fisher exact test. Ancestry was evaluated as yes/no for each classification.