Table 1.
Descriptives stratified by childhood trauma and genetic liability.
| CHILDHOOD TRAUMA | |||
|---|---|---|---|
| Low | Medium | High | |
| Number of subjects (number of assessments) | 229 (9,241) | 258 (10,438) | 201 (7,988) |
| % Females | 71% | 56% | 53% |
| % Low education | 2% | 6% | 8% |
| Mean age (SD) | 17.8 (3.66) | 17.4 (SD = 3.81) | 17.6 (SD = 3.81) |
| Range | 15–33 | 14–34 | 15–34 |
| Mean trauma total score (SD) | 27.2 (1.38) | 32.4 (1.68) | 43.1 (9.17) |
| ASSESSMENT LEVEL | |||
| Cheerful mean (SD overall; between; within) | 4.99 (1.49; 0.81; 1.26) | 4.88 (1.47; 0.80; 1.24) | 4.56 (1.63; 0.97; 1.32)*† |
| Insecure mean (SD overall; between; within) | 1.64 (1.17; 0.60; 1.01) | 1.70 (1.16; 0.65; 0.98) | 1.82 (1.25; 0.72; 1.03)* |
| Relaxed mean (SD overall; between; within) | 5.2 (1.48; 0.69; 1.31) | 5.15 (1.43; 0.69; 1.26) | 4.82 (1.53; 0.76; 1.34)*† |
| Anxious mean (SD overall; between; within) | 1.4 (0.93; 0.45; 0.82) | 1.46 (0.92; 0.48; 0.79) | 1.60 (SD = 1.10; 0.63; 0.91)*† |
| Irritated mean (SD overall; between; within) | 2.18 (1.62; 0.88; 1.36) | 2.19 (1.52; 0.83; 1.29) | 2.48 (1.66; 0.97; 1.36)*† |
| Down mean (SD overall; between; within) | 1.59 (1.08; 0.55; 0.92) | 1.69 (1.11; 0.64; 0.93)* | 1.91 (1.27; 0.77; 1.02)*† |
| GENETIC LIABILITY | |||
| Low liability | Intermediate liability | High liability | |
| Number of subjects (number of assessments) | 452 (18,338) | 90 (3,553) | 56 (2,314) |
| % Females | 59% | 63% | 71% |
| % Low education | 6% | 6% | 10% |
| Mean age (SD) | 17.5 (3.66) | 16.4 (1.89) | 17.9 (4.02) |
| Range | 14–34 | 15–22 | 15–32 |
| ASSESSMENT LEVEL | |||
| Cheerful mean (SD overall; between) | 4.85 (1.49; 0.84; 1.24) | 4.76 (1.62; 0.91; 1.34) | 4.56 (1.56; 0.93; 1.29) |
| Insecure mean (SD overall; between) | 1.70 (1.16; 0.61; 0.99) | 1.79 (1.29; 0.78; 1.06) | 1.77 (1.24; 0.73; 1.01) |
| Relaxed mean (SD overall; between) | 5.09 (1.45; 0.71; 1.28) | 5.08 (1.47; 0.66; 1.32) | 4.84 (1.54; 0.80; 1.32)† |
| Anxious mean (SD overall; between) | 1.46 (0.93; 0.47; 0.81) | 1.58 (1.11; 0.61; 0.95) | 1.62 (1.12; 0.75; 0.86) |
| Irritated mean (SD overall; between) | 2.26 (1.57; 0.89; 1.31) | 2.40 (1.70; 0.87; 1.46) | 2.29 (1.56; 1.03; 1.25) |
| Down mean (SD overall; between) | 1.71 (1.12; 0.63; 0.94) | 1.77 (1.21; 0.68; 1.01) | 1.92 (1.35; 0.86; 1.05) |
SD, Standard deviation; DZ, Dizygotic twins; MZ, Monozygotic twins; Scl-90, Symptoms checklist.
*
The difference in mean with that of the low subgroup is statistically significant.
†
The difference in mean with that of the intermediate (or medium) subgroup is statistically significant.