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Table 2 Bivariate associations between sociodemographic and clinical predictors and willingness to donate biospecimens for future research uses (N = 1889)

From: Secondary consent to biospecimen use in a prostate cancer biorepository

  N Yes conditional
N (%)
Yes always
N (%)
χ2 OR (95 % CI)
always (vs. conditional)
p value
Age at diagnosis 1859      
 Mean (SD)   61.0 (7.4) 61.4 (7.2) −0.75a 0.453
Race 1889    54.28   <0.001*
 White   1523 (90.0) 142 (72.1)   1.00 (ref)  
 Black   169 (10.0) 55 (27.9)   3.49 (2.46, 4.95)  
Family history 1694    10.53   0.001*
 No   1004 (66.0) 92 (53.5)   1.00 (ref)  
 Yes   518 (34.0) 80 (46.5)   1.69 (1.23, 2.32)  
Marital status 1301      0.415b
 Married   1049 (86.0) 66 (81.5)   1.00 (ref)  
 Not currently married   141 (11.6) 12 (14.8)   1.35 (0.71, 2.57)  
 Never married   30 (2.5) 3 (3.7)   1.59 (0.47, 5.34)  
Employment status 1292      0.104b
 Employed   661 (54.6) 40 (49.4)   1.00 (ref)  
 Retired   489 (40.4) 32 (39.5)   1.08 (0.67, 1.75)  
 Unemployed   41 (3.4) 6 (7.1)   2.42 (0.97, 6.04)  
 Other   20 (1.7) 3 (3.7)   2.48 (0.71, 8.70)  
Smoking 1847    0.34   0.844
 Never smoked   800 (48.4) 98 (50.2)   1.00 (ref)  
 Former smoker   660 (39.9) 75 (38.7)   0.93 (0.68, 1.28)  
 Current smoker   193 (11.7) 21 (10.8)   0.89 (0.54, 1.46)  
Stage 1841    7.78   0.005*
 T1c   1316 (79.4) 162 (88.0)   1.00 (ref)  
 T2a/T2b/T2c   341 (20.6) 22 (12.0)   0.52 (0.33, 0.83)  
Gleason score 1846    17.22   <0.001*
 2–6   1035 (62.5) 89 (47.1)   1.00 (ref)  
 7   489 (29.5) 81 (42.9)   1.93 (1.40, 2.65)  
 8+   133 (8.0) 19 (10.1)   1.66 (0.98, 2.82)  
  1. * Significant at the α = 0.05 level
  2. at value is calculated for continuous variables
  3. bFisher’s exact test is used for variables with expected cell counts <5
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