Table 2.
Summary Statistics and Variance Components Estimates of Genetic and Environmental Effects for Unadjusted At-Home Testing Measures of DHEAS
| Days 1 and 2 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Awake | 6.54 (0.05) | 0631h (2.25) | 0.32 | (0.18; 0.44) | 0.27 | (0.14; 0.40) | 0.09 | (−0.26; 0.44) | 0.22 | (−0.07; 0.51) | 0.68 |
| Awake+30 | 5.59 (0.05) | 0684h (2.26) | 0.39 | (0.27; 0.50) | 0.28 | (0.12; 0.42) | 0.22 | (−0.12; 0.59) | 0.17 | (−0.16; 0.46) | 0.61 |
| 10 AM | 5.12 (0.05) | 1019h (1.56) | 0.47 | (0.36; 0.57) | 0.31 | (0.18; 0.44) | 0.32 | (0.01; 0.63) | 0.15 | (−0.12; 0.41) | 0.53 |
| 3 PM | 5.21 (0.05) | 1502h (1.66) | 0.46 | (0.34; 0.56) | 0.22 | (0.08; 0.36) | 0.47 | (0.12; 0.81) | −0.01 | (−0.31; 0.27) | 0.54 |
| Bedtime | 5.19 (0.05) | 2040h (3.63) | 0.35 | (0.22; 0.47) | 0.19 | (0.06; 0.33) | 0.31 | (−0.05; 0.66) | 0.04 | (−0.25; 0.33) | 0.65 |
| Home Overall | 5.53 (0.05) | 0.48 | (0.36; 0.58) | 0.29 | (0.14; 0.41) | 0.38 | (0.07; 0.71) | 0.1 | (−0.20; 0.35) | 0.52 |
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