Table 4.
Summary Statistics and Variance Components Estimates of Genetic and Environmental Effects for At-Home Testing Measures of DHEAS Adjusted for Age
| Measure | Mean DHEAS Levels in ng/ml (SD) |
Mean Time of DHEAS Collection (SD) |
rMZ | 95% CI | rDZ | 95% CI | A | 95% CI | C | 95% CI | E |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Waking | 6.63 (0.05) | 0631h (2.25) | 0.33 | (0.19; 0.45) | 0.30 | (0.16; 0.41) | 0.07 | (−0.29; 0.42) | 0.26 | (−0.03; 0.52) | 0.67 |
| Awake +30 | 5.71 (0.06) | 0684h (2.26) | 0.39 | (0.27; 0.5) | 0.27 | (0.13; 0.41) | 0.24 | (−0.11; 0.59) | 0.15 | (−0.14; 0.44) | 0.61 |
| 10am | 5.24 (0.05) | 1019h (1.56) | 0.44 | (0.31; 0.55) | 0.23 | (0.04; 0.37) | 0.41 | (0.07; 0.78) | 0.03 | (−0.33; 0.32) | 0.56 |
| 3pm | 5.33 (0.05) | 1502h (1.66) | 0.44 | (0.32; 0.55) | 0.21 | (0.09; 0.34) | 0.46 | (0.13; 0.78) | −0.02 | (−0.29; 0.25) | 0.56 |
| Bedtime | 5.32 (0.05) | 2040h (3.63) | 0.35 | (0.21; 0.47) | 0.16 | (0.05; 0.29) | 0.37 | (0.01; 0.7) | −0.02 | (−0.28; 0.26) | 0.65 |
| Mean | 5.93 (0.05) | 0.45 | (0.33; 0.56) | 0.29 | (0.11; 0.42) | 0.31 | (−0.02; 0.71) | 0.14 | (−0.24; 0.41) | 0.55 |
Bold values indicate significant estimate
rMZ = Monozygotic twin correlation; rDZ = Dizygotic twin correlation
A = Estimate of broad sense heritability, 2(rMZ - rDZ)
C = Estimate of shared environmental effects, 2*rMZ - rDZ
E = Estimate of unique environmental effects 1 – rMZ