Table 1.

Selected characteristics of cases and controls

Cases (n = 754), n (%)Controls (n = 928), n (%)P*
Age (y)
    18-2065 (8.6)68 (7.3)0.96
    21-25248 (32.9)311 (33.5)
    26-30212 (28.1)265 (28.6)
    31-35132 (17.5)161 (17.3)
    36-4075 (10.0)97 (10.5)
    41-4622 (2.9)26 (2.8)
Race
    White635 (84.2)788 (84.9)0.42
    Black22 (2.9)35 (3.8)
    Other97 (12.9)105 (11.3)
Cryptorchism
    No713 (94.6)912 (98.3)<0.0001
    Yes41 (5.4)16 (1.7)
Family history of testicular cancer
    No721 (95.6)914 (98.5)<0.001
    Yes33 (4.4)14 (1.5)
Mother participated in study
    Yes515 (68.3)561 (60.4)<0.001
    No239 (31.7)367 (39.6)
Mother deceased
    No646 (85.7)797 (85.9)0.63
    Yes82 (10.9)109 (11.7)
    Missing data26 (3.4)22 (2.3)
  • * P of χ2 test.

  • Family history in first- and second-degree relatives.