Table 2.
Correlations among the SCL‐90‐R subscales, Cronbach's alpha (α) and H‐values based on the confirmatory non‐parametric item response theory (NIRT) analysis (clinical disorder group)
| Som | Obs | Int | Dep | Anx | Hos | Pho | Par | Psy | |
|---|---|---|---|---|---|---|---|---|---|
| Somatization (Som) | 1 | 0.55 | 0.43 | 0.56 | 0.69 | 0.31 | 0.44 | 0.35 | 0.40 |
| Obsessive‐compulsive (Obs) | 1 | 0.57 | 0.74 | 0.57 | 0.36 | 0.32 | 0.48 | 0.52 | |
| Interpersonal sensitivity (Int) | 1 | 0.66 | 0.53 | 0.38 | 0.45 | 0.67 | 0.61 | ||
| Depression (Dep) | 1 | 0.65 | 0.35 | 0.30 | 0.49 | 0.61 | |||
| Anxiety (Anx) | 1 | 0.39 | 0.56 | 0.43 | 0.54 | ||||
| Hostility (Hos) | 1 | 0.13 | 0.46 | 0.40 | |||||
| Phobic anxiety (Pho) | 1 | 0.22 | 0.25 | ||||||
| Paranoid ideation (Par) | 1 | 0.64 | |||||||
| Psychoticism (Psy) | 1 | ||||||||
| Mean correlation | 0.46 | 0.51 | 0.54 | 0.54 | 0.54 | 0.35 | 0.33 | 0.47 | 0.50 |
| α | 0.86 | 0.83 | 0.81 | 0.87 | 0.85 | 0.72 | 0.85 | 0.72 | 0.69 |
| H | 0.36 | 0.38 | 0.35 | 0.39 | 0.41 | 0.42 | 0.49 | 0.32 | 0.26 |
Global Severity Index (GSI): Cronbach's alpha (α) = 0.96, H = 0.24.