Table 2.
Summary of the regression analysis in the prediction of hair cortisol concentration (A), and HSCL symptoms of depression (B, D) and anxiety (C, E).
| Unstandardized coefficients B (SE) | Standardized coefficient β | t | p | Explained variance | |
|---|---|---|---|---|---|
| A. Outcome: hair cortisol concentration (R2adj = 0.51, F(4, 142) = 38.6, p < 0.0001) | |||||
| Intercept | 2.57 (0.17) | 14.85 | < 0.0001 | ||
| Dummy (1 = member of the Peruvian sample, 0 = else) | 0.73 (0.06) | 0.83 | 12.21 | < 0.0001 | 40.8% |
| Dummy (1 = member of the Greek sample, 0 = else) | 0.27 (0.07) | 0.33 | 3.73 | 0.0003 | 2.8% |
| Pregnancy week | 0.01 (0.01) | 0.17 | 2.36 | 0.0199 | 0.7% |
| Trauma load (lifetime) | − 0.10 (0.02) | − 0.42 | − 6.10 | < 0.0001 | 7.7% |
| B. Outcome: HSCL: symptoms of depression (R2adj = 0.21, F(4, 142) = 10.87, p < 0.0001) | |||||
| Intercept | − 0.08 (0.23) | − 0.33 | 0.740 | ||
| Dummy (1 = member of the Peruvian sample, 0 = else) | 0.34 (0.08) | 0.38 | 4.31 | < 0.0001 | 12.9% |
| Dummy (1 = member of the Greek Sample, 0 = else) | 0.21 (0.10) | 0.31 | 2.14 | 0.034 | 1.3% |
| Pregnancy week | 0.01 (0.01) | 0.22 | 1.44 | 0.153 | 0.8% |
| Trauma load (lifetime) | 0.06 (0.02) | 0.25 | 2.98 | 0.003 | 8.5% |
| C. Outcome: HSCL: symptoms of anxiety (R2adj = 0.12, F(4, 142) = 5.96, p < 0.001) | |||||
| Intercept | − 0.02 (0.27) | − 0.06 | 0.954 | ||
| Dummy (1 = member of the Peruvian sample, 0 = else) | 0.24 (0.09) | 0.25 | 2.57 | 0.011 | 5.8% |
| Dummy (1 = member of the Greek sample, 0 = else) | 0.21 (0.11) | 0.32 | 1.79 | 0.076 | 0.9% |
| Pregnancy week | 0.01 (0.01) | 0.22 | 0.87 | 0.387 | 0.3% |
| Trauma load (lifetime) | 0.08 (0.03) | 0.27 | 3.06 | 0.003 | 7.7% |
| D. Outcome: HSCL: symptoms of depression (R2adj = 0.20, F(4, 142) = 10.02, p < 0.0001) | |||||
| Intercept | 0.63 (0.33) | 1.89 | 0.061 | ||
| Dummy (1 = member of the Peruvian sample, 0 = else) | 0.58 (0.10) | 0.63 | 5.90 | < 0.0001 | 17.3% |
| Dummy (1 = member of the Greek sample, 0 = else) | 0.25 (0.10) | 0.36 | − 2.47 | 0.015 | 1.5% |
| Pregnancy week | 0.01 (0.01) | 0.28 | 1.98 | 0.050 | 1.1% |
| Hair cortisol concentration | − 0.25 (0.10) | − 0.23 | − 2.43 | 0.014 | 2% |
| E. Outcome: HSCL: symptoms of anxiety (R2adj = 0.09, F(4, 142) = 4.81, p = 0.001) | |||||
| Intercept | 0.71 (0.39) | 1.82 | 0.072 | ||
| Dummy (1 = member of the Peruvian sample, 0 = else) | 0.49 (0.12) | 0.49 | 4.23 | < 0.0001 | 9.2% |
| Dummy (1 = member of the Greek sample, 0 = else) | 0.23 (0.12) | 0.36 | 1.88 | 0.062 | 0.8% |
| Pregnancy week | 0.01 (0.01) | 0.28 | 1.36 | 0.175 | 0.5% |
| Hair cortisol concentration | − 0.25 (0.12) | − 0.22 | − 2.09 | 0.038 | 1.3% |
HSCL Hopkins symptom checklist-25, HCC hair cortisol concentration in a scalp-near segment of 2 cm length.