Table 1. Mean and s.d. of clinical characteristics, in n = 22 MD patients and n=22 control subjects.
| Variables |
Groups |
U-value | Z-value | Х2 | P-value | |
|---|---|---|---|---|---|---|
| MD (n= 22) | Controls (n= 22) | |||||
| DSM-IV | ||||||
| Mild | 4 (18.2%) | 0 | ||||
| Moderate | 8 (36.4%) | 0 | ||||
| Severe | 10 (45.5%) | 0 | ||||
| BDI score (mean±s.d.) | 24.0±10.4 | 2.3±2.3 | 0.5 | −5.683 | 1.32 × 10−8 | |
| MADRS score (mean±s.d.) | 23.4±8.7 | 2.0±2.3 | 0.5 | −5.706 | 1.16 × 10−8 | |
| ETI score (mean±s.d.) | 28.0±17.3 | 6.6±7.0 | 48.0 | −4.339 | 1.40 × 10−5 | |
| Age (mean±s.d. years) | 58.7±6.2 | 57.6±5.6 | 219.0 | −0.541 | 0.588 | |
| Sex (female, n (%)) | 22 (100%) | 22 (100%) | ||||
| BMI (mean±s.d. kg m−2) | 28.5±7.2 | 24.4±3.0 | 155.0 | −2.042 | 0.041 | |
| Smoker (yes, n (%)) | 12 (54.5%) | 4 (18.2%) | 6.29 | 0.012 | ||
| Physical activity (yes, n (%)) | 14 (63.6%) | 19 (86.4%) | 3.03 | 0.082 | ||
| Medication | ||||||
| Medication (yes, n (%)) | 22 (100 %) | 9 (40.9 %) | ||||
| Antidepressant (yes, n (%)) | 17 (77.3 %) | 0 | ||||
| Antipsychotic (yes, n (%)) | 9 (40.9 %) | 0 | ||||
Abbreviations: BDI, Beck Depression Inventory II; BMI, body mass index; ETI, Essener Trauma Inventory; MADRS, Montgomery-Asberg Depression Rating Scale; MD, major depression. U-value, Z-value are listed for two-tailed Mann–Whitney U test, X2 for Pearson's X2 test. Bold P-values indicate significance on an alpha level of 0.05.