Table 2.
Age and Tanner stage-adjusted geometric mean (95% confidence interval) serum concentrationsa of sex steroid hormones and SHBG by race/ethnicity in 134 adolescent males, NHANES III (Phase I), 1988–1991
| 12–15 year olds (N = 57) |
16–19 year olds (N = 77) |
|||||
|---|---|---|---|---|---|---|
| Pairwise Comparisons |
Pairwise Comparison |
|||||
| Hormone | Mean (95% CI) | versus Non- Hispanic white |
versus Non- Hispanic black |
Mean (95% CI) | versus Non- Hispanic white |
versus Non- Hispanic black |
| Testosterone (ng/mL) | ||||||
| Non-Hispanic white | 2.17 (1.57, 3.00) | -- | -- | 4.72 (3.77, 5.91) | -- | -- |
| Non-Hispanic black | 1.38 (0.79, 2.40) | 0.12 | -- | 5.86 (4.85, 7.09) | 0.17 | -- |
| Mexican-American | 2.51 (1.79, 3.51) | 0.51 | 0.077 | 6.02 (5.24, 6.91) | 0.053 | 0.811 |
| Free Testosterone (ng/mL) | ||||||
| Non-Hispanic white | 0.029 (0.021, 0.040) | -- | -- | 0.110 (0.082, 0.148) | -- | -- |
| Non-Hispanic black | 0.019 (0.009, 0.039) | 0.28 | -- | 0.126 (0.102, 0.157) | 0.41 | -- |
| Mexican-American | 0.041 (0.026, 0.064) | 0.24 | 0.12 | 0.136 (0.113, 0.164) | 0.19 | 0.59 |
| Estradiol (pg/mL) | ||||||
| Non-Hispanic white | 24.69 (21.58, 28.23) | -- | -- | 35.19 (30.28, 40.91) | -- | -- |
| Non-Hispanic black | 20.03 (15.35, 26.13) | 0.20 | -- | 38.06 (31.66, 45.76) | 0.53 | -- |
| Mexican-American | 21.95 (18.15, 26.53) | 0.29 | 0.57 | 35.48 (32.98, 38.17) | 0.92 | 0.48 |
| Free Estradiol (pg/mL) | ||||||
| Non-Hispanic white | 0.521 (0.438, 0.619) | -- | -- | 0.953 (0.798, 1.137) | -- | -- |
| Non-Hispanic black | 0.437 (0.299, 0.639) | 0.43 | -- | 0.989 (0.812, 1.204) | 0.77 | -- |
| Mexican-American | 0.509 (0.372, 0.696) | 0.89 | 0.54 | 0.925 (0.828, 1.033) | 0.78 | 0.55 |
| SHBG (nmol/L) | ||||||
| Non-Hispanic white | 56.10 (46.75, 67.32) | -- | -- | 23.07 (16.92, 31.46) | -- | -- |
| Non-Hispanic black | 53.01 (37.22, 75.51) | 0.77 | -- | 30.09 (25.78, 35.11) | 0.17 | -- |
| Mexican-American | 39.97 (28.41, 56.24) | 0.084 | 0.28 | 26.82 (24.11, 29.85) | 0.33 | 0.18 |
a
Geometric mean adjusted for age (continuous) and Tanner stage (categorical).