Table 1.

Selected characteristics of cases and controls in the STEED study

Controls (n = 913)All TGCT (n = 736)Seminoma (n = 313)Nonseminoma (n = 422)
n (%)n (%)P*n (%)P*n (%)P*
Reference age (y)0.94<0.0001<0.0001
    18–2067 (7.3)64 (8.7)12 (3.8)52 (12.3)
    21–25306 (33.5)238 (32.3)57 (18.2)180 (42.7)
    26–30260 (28.5)205 (27.9)106 (33.9)99 (23.5)
    31–35159 (17.4)132 (17.9)74 (23.6)58 (13.7)
    36–4095 (10.4)75 (10.2)49 (15.7)26 (6.2)
    41–4526 (2.8)22 (3.0)15 (4.8)7 (1.7)
Race/ethnicity0.470.100.37
    White780 (85.4)623 (84.6)253 (80.8)370 (87.7)
    Black34 (3.7)22 (3.0)12 (3.8)10 (2.4)
    Other99 (10.8)91 (12.4)48 (15.3)42 (10.0)
History of cryptorchism<0.00010.07<0.0001
    No897 (98.2)697 (94.7)302 (96.5)394 (93.4)
    Yes16 (1.8)39 (5.3)11 (3.5)28 (6.6)
Family history of testicular cancer 0.00090.00040.02
    No899 (98.5)705 (95.8)297 (94.9)407 (96.4)
    Yes14 (1.5)31 (4.2)16 (5.1)15 (3.6)
BMI 0.860.240.93
    <18.511 (1.2)9 (1.2)4 (1.3)4 (0.9)
    18.5–24.9404 (44.2)321 (43.6)136 (43.5)185 (43.8)
    25.0–29.9451 (49.4)359 (48.8)147 (47.0)212 (50.2)
    ≥30.047 (5.1)45 (6.1)26 (8.3)19 (4.5)
Adult height (in)0.00090.010.02
    <68257 (28.09)151 (20.43)60 (19.17)91 (21.41)
    68–70253 (27.65)217 (29.36)96 (30.67)121 (28.47)
    71–72237 (25.90)193 (26.12)84 (26.84)109 (25.65)
    ≥73168 (18.36)178 (24.09)73 (23.32)104 (24.47)
DDE (ng/g lipid)0.005<0.00010.33
    Q1 (≤157)238 (26.10)186 (25.31)59 (18.91)127 (30.09)
    Q2 (158–250)230 (25.22)167 (22.72)68 (21.79)98 (23.22)
    Q3 (251–390)220 (24.12)146 (19.86)57 (18.27)89 (21.09)
    Q4 (>390)224 (24.56)236 (32.11)128 (41.03)108 (25.59)
  • * P value of χ2 test.

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

  • BMI = height/weight2 (kg/m2).