Table 3.
Correlations between scores on various questionnaires computed separately for addition patients (below the diagonal) and non-clinical control (above the diagonal).
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | |
|---|---|---|---|---|---|---|---|---|---|
| MATE 2.1 severity of problem | |||||||||
| (1) Level of craving for substance† | 0.27 | 0.24 | −0.10 | −0.02 | 0.39* | 0.32 | 0.37* | 0.29 | |
| (2) Substance use-related social problems | 0.63*** | 0.48** | −0.27 | −0.22 | 0.28 | 0.20 | 0.11 | 0.42* | |
| (3) Substance use-related other problems | 0.61*** | 0.69*** | −0.20 | −0.05 | 0.30 | 0.25 | 0.30 | 0.22 | |
| MHQoL | |||||||||
| (4) Quality of life | −0.69*** | −0.47** | −0.55** | 0.76*** | −0.51** | −0.44* | −0.45** | −0.38* | |
| (5) Overall psychological wellbeing | −0.53** | −0.53** | −0.64*** | 0.80*** | −0.36* | −0.35* | −0.24 | −0.28 | |
| HQ-25 | |||||||||
| (6) Total score | 0.65*** | 0.58** | 0.62*** | −0.84*** | −0.79*** | 0.94*** | 0.80*** | 0.70*** | |
| (7) Socialization problems | 0.67*** | 0.56** | 0.59*** | −0.87*** | −0.78*** | 0.97*** | 0.71*** | 0.50*** | |
| (8) Isolation | 0.60*** | 0.52** | 0.56** | −0.79*** | −0.72*** | 0.97*** | 0.96*** | 0.30 | |
| (9) Lack of emotional support | 0.51** | 0.56** | 0.58** | −0.58** | −0.68*** | 0.80*** | 0.66*** | 0.68*** | |
n = 31 for addiction patients, n = 34 for clinical controls. MATE 2.1, Measurement in the Addictions for Triage and Evaluation, version 2.1; MHQoL, Mental Health Quality of Life questionnaire. HQ-25 = 25-item Hikikomori Questionnaire. *** p <0.001, ** p <0.01, * p <0.05.