Table 2. Results of the all immature and the immature orphan models.
These two models tested in immatures for the effect of orphan status (all immature model) and, for immature orphan only, the effect of age when mother died and years since maternal loss (orphan immature model) on cortisol levels and diurnal cortisol slopes. The results presented here are from reduced all immature and immature orphan models after removing the interactions for which the 90% credible interval (CI) overlapped 0. SE indicates the standard error of the estimate for each predictor. The coded level for each categorical predictor is indicated in parentheses. Control predictors are italicized. 95% CI low and 95% CI high indicate the lower and upper limits of the 95% CI. Likewise, 90% CI low and 90% CI high indicate the lower and upper limits of the 90% CI. CIs that do not overlap 0 are indicated in bold. Predictors for which the 95% CI did not overlap 0 are indicated with salmon shading, and predictors for which the 95% CI overlapped 0 but the 90% CI did not overlap 0 are indicated with yellow shading. LCMS: liquid chromatography mass spectrometry. Time of the day2: quadratic term for time of the day. Time of the day3: cubic term for time of the day.
| Model | Response | Predictor | Estimate | SE | 95% CI low | 95% CI high | 90% CI low | 90% CI high |
|---|---|---|---|---|---|---|---|---|
| All immature model | Log urinary cortisol levels (ng/ml SG) | Intercept | 3.69 | 0.27 | 3.17 | 4.23 | 3.26 | 4.14 |
| Time of the day | –0.38 | 0.08 | –0.53 | –0.22 | –0.51 | –0.25 | ||
| Time of the day2 | –0.01 | 0.08 | –0.17 | 0.14 | –0.14 | 0.11 | ||
| Time of the day3 | 0.03 | 0.04 | –0.05 | 0.12 | –0.04 | 0.10 | ||
| Orphan category (orphan for less than 2 years) | 0.01 | 0.19 | –0.36 | 0.38 | –0.30 | 0.32 | ||
| Orphan category (orphan for more than 2 years) | –0.14 | 0.22 | –0.58 | 0.32 | –0.50 | 0.23 | ||
| Sex ratio | 0.07 | 0.07 | –0.06 | 0.2 | –0.04 | 0.18 | ||
| Community size | –0.12 | 0.06 | –0.24 | 0.01 | –0.22 | –0.01 | ||
| Individual sex (male) | –0.26 | 0.25 | –0.78 | 0.22 | –0.67 | 0.13 | ||
| Individual age at sample | –0.01 | 0.17 | –0.33 | 0.37 | –0.27 | 0.29 | ||
| LCMS method (old) | 0.06 | 0.35 | –0.62 | 0.78 | –0.50 | 0.64 | ||
| Sin(seasonDate) | –0.07 | 0.04 | –0.14 | 0 | –0.13 | –0.02 | ||
| Cos(seasonDate) | 0.01 | 0.04 | –0.06 | 0.08 | –0.05 | 0.07 | ||
| Orphan category (less than 2 years): time of the day | –0.22 | 0.10 | –0.41 | –0.03 | –0.38 | –0.07 | ||
| Orphan category (more than 2 years): time of the day | –0.11 | 0.08 | –0.27 | 0.03 | –0.24 | 0.01 | ||
| Immature orphan model | Log urinary cortisol levels (ng/ml SG) | Intercept | 3.59 | 0.26 | 3.08 | 4.11 | 3.17 | 4.02 |
| Time of the day | –0.44 | 0.17 | –0.75 | –0.05 | –0.7 | –0.14 | ||
| Time of the day2 | –0.01 | 0.07 | –0.16 | 0.13 | –0.13 | 0.1 | ||
| Time of the day3 | 0.03 | 0.11 | –0.18 | 0.27 | –0.14 | 0.22 | ||
| Orphan’s age when mother died | 0.00 | 0.24 | –0.51 | 0.46 | –0.41 | 0.38 | ||
| Years since maternal loss | –0.16 | 0.16 | –0.48 | 0.14 | –0.42 | 0.09 | ||
| Sex ratio | –0.06 | 0.11 | –0.27 | 0.15 | –0.23 | 0.11 | ||
| Community size | –0.05 | 0.08 | –0.22 | 0.12 | –0.19 | 0.09 | ||
| Individual sex (male) | 0.1 | 0.3 | –0.47 | 0.7 | –0.38 | 0.6 | ||
| LCMS method (old) | –0.04 | 0.32 | –0.66 | 0.64 | –0.55 | 0.51 | ||
| Sin(seasonDate) | 0.02 | 0.05 | –0.09 | 0.12 | –0.07 | 0.1 | ||
| Cos(seasonDate) | 0.04 | 0.05 | –0.07 | 0.14 | –0.05 | 0.12 | ||
| Years since maternal loss: time of the day | 0.19 | 0.1 | –0.01 | 0.38 | 0.02 | 0.35 | ||
| Years since maternal loss: time of the day2 | –0.05 | 0.05 | –0.15 | 0.05 | –0.14 | 0.03 | ||
| Years since maternal loss: time of the day3 | –0.06 | 0.04 | –0.15 | 0.02 | –0.14 | 0.00 | ||
| Age when mother died: time of the day | 0.08 | 0.09 | –0.09 | 0.25 | –0.06 | 0.22 | ||
| Age when mother died: time of the day2 | –0.12 | 0.06 | –0.23 | –0.00 | –0.21 | –0.02 |