Table 1.
Summary statistics and variance component estimates for At-Home and Day-of-Testing testosterone levels
| Testosterone | Collection | Correlations |
Variance Components |
||||
|---|---|---|---|---|---|---|---|
| Measure | level pg/ml (SD) | Time (SD) | rmz (95% CI) | rdz (95% CI) | A (95% CI) | C (95% CI) | E (95% CI) |
| At Home (Days 1 & 2) | |||||||
| Wake | 140.65 (54.15) | 0631 h (2.25) | .30 (.15; .44) | .13 (.01; .29) | .30 (.15; .44) | -- | .70 (.56; .85) |
| Wake +30* | 112.47 (43.27) | 0684 h (2.26) | .32 (.17; .47) | .18 (.04; .32) | .32 (.17; .47) | -- | .68 (.53; .83) |
| 10 a.m. | 92.74 (38.0) | 1019 h (1.56) | .37 (.23; .50) | .14 (.04; .27) | .37 (.23; .50) | -- | .63 (.50; .77) |
| 3 p.m. | 81.12 (34.52) | 1502 h (1.66) | .37 (.23; .49) | .12 (.03; .26) | .37 (.23; .49) | -- | .63 (.51; .77) |
| Evening | 68.51 (27.71) | 2040 h (3.36) | .30 (.15; .44) | .29 (.15; .43) | .02 (−.36; .39) | .28 (−.02; .59) | .70 (.57; .85) |
| Overall Mean | 100.58 (35.10) | - | .42 (.27; .55) | .17 (.03; .32) | .42 (.27; .55) | -- | .58 (.45; 73) |
| Day of Testing | |||||||
| Wake | 132.43 (53.53) | 0589 h (0.78) | .39 (.26; .51) | .16 (.04; .31) | .39 (.26; .40) | -- | .61 (.49; .74) |
| Wake +30 | 115.90 (49.44) | 0644 h (0.87) | .41 (.27; .52) | .25 (.10; .38) | .33 (−.02; .67) | .08 (−.21; .37) | .59(.48; .73) |
| 10 a.m. | 103.24 (47.23) | 0973 h (0.58) | .31 (.15; .45) | .23 (.08; .38) | .15 (−.24; .52) | .16 (−.16; .46) | .69 (.55; .85) |
| 3 p.m. | 94.39 (44.59) | 1493 h (0.98) | .35 (.20; .48) | .25 (.09; .40) | .20 (−.18; .58) | .15 (−.17; .46) | .65 (.52; .80) |
| Evening | 81.48 (38.94) | 2058 h (4.67) | .34 (.20; .46) | .31 (.15; .46) | .05 (−.32; .42) | .29 (−.04; .59) | .66 (.54; .80) |
| Overall Mean | 107.45 (37.35) | -- | .47 (.33; .58) | .23 (.06; .38) | .47 (.33; .58) | -- | .53 (.42; .67) |
*
Results from AE models are presented in cases where the shared environment (C) was positive, but nevertheless accounted for less than 5 percent of the phenotypic variance. rmz = Monozygotic twin correlation; rdz = Dizygotic twin correlation; A = Additive genetic influences; C = Shared environmental influences; E = Unique environmental influences.