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Table 1 Serum concentrations of 13α-Diol-G and testosterone by demographic characteristics

From: Testosterone and androstanediol glucuronide among men in NHANES III

   Number (%) 13α-Diol-G, ng/ml, mean (SD) Testosterone, ng/ml, mean (SD)
Age, years < 65 1135 (76) 13.68 (8.95) 5.59 (2)
≥65 358 (24) 10.91 (8.37) 4.34 (1.87)
P value < 0.001 < 0.001
Tertiles of BMI, kg/m2 1st (≤23) 475 (31.8) 12.54 (9.36) 6.18 (2.23)
2nd (24–27) 509 (34.1) 13.27 (8.77) 5.32 (1.89)
3rd (≥27) 509 (34.1) 13.21 (8.56) 4.43 (1.58)
P value 0.36 < 0.001
Smoking Never 536 (35.9) 13.35 (8.25) 5.27 (1.89)
Former 489 (32.8) 12.74 (10.16) 4.52 (1.82)
Current 468 (31.4) 12.92 (8.15) 6.1 (2.11)
P value 0.53 < 0.001
Health statusa Good 885 (59.3) 13.55 (9.14) 5.65 (2.01)
Poor 608 (40.7) 12.23 (8.46) 4.76 (1.96)
P value 0.005 < 0.001
Self-rated health Excellent 540 (37.2) 13.79 (9.5) 5.65 (1.98)
Very good 326 (22.5) 12.96 (8.92) 5.39 (2.11)
Good 440 (30.3) 12.87 (8.25) 5.11 (1.95)
Fair 128 (8.8) 10.63 (7.68) 4.41 (1.97)
Poor 17 (1.2) 9.8 (6.54) 3.38 (2.01)
P value 0.003 < 0.001
Ethnicity Non-Hispanic white 675 (45.2) 13.36 (9.34) 5.0 (1.93)
Non-Hispanic black 369 (24.7) 12.55 (8.87) 5.71 (2.19)
Mexican-American 391 (26.2) 13.27 (8.41) 5.46 (2)
Other 58 (3.9) 10.24 (5.8) 4.8 (2)
P value 0.05 < 0.001
  1. aPoor health status was defined as self-reported physician diagnosis of any of the following diseases: diabetes, hypertension, high cholesterol, heart disease or stroke, or at least one hospitalization during the past 12 months
  2. P values were from ANOVA test