Table 2. 3-level regression model readmission in the second half of the year after discharge.
| Variable | Covariance parameter estimate | Standard error | ||
| Random intercepts of the null model | ||||
| Hospital | 0.09 | 0.02 | ||
| Region (post code 2 digits) | 0.02 | 0.01 | ||
| Random intercepts of the predictor model | ||||
| Hospital | 0.04 | 0.02 | ||
| Region (post code 2 digits) | 0.02 | 0.01 | ||
| Variable | Odds ratio*1 | F value | p | |
| Fixed effects of the predictor model | ||||
| Sociodemographic factors | ||||
| – Age (per year) | 1.00 | [1.00; 1.01] | 14.42 | 0.0001 |
| – Male sex | 0.95 | [0.85; 1.05] | 1.18 | 0.2769 |
| Illness-related factors | ||||
| – Secondary diagnosis personality disorder (F60–F61) | 1.70 | [1.51; 1.90] | 82.11 | <0.0001 |
| – Secondary diagnosis posttraumatic stress disorder (F43.1) | 1.53 | [1.30; 1.81] | 25.81 | <0.0001 |
| – Primary diagnosis severe depression (F3x.2–F3x.3) | 1.50 | [1.35; 1.66] | 55.26 | <0.0001 |
| – Secondary diagnosis obsessive-compulsive disorder (F42) | 1.32 | [1.01; 1.72] | 4.18 | 0.0408 |
| – Secondary diagnosis drugs (F11–F19 except F17) | 1.28 | [1.09; 1.51] | 9.19 | 0.0024 |
| – Secondary diagnosis alcohol-related disorders (F10) | 1.21 | [1.05; 1.39] | 6.75 | 0.0094 |
| – Secondary diagnosis dissociative disorder (F44) | 1.13 | [0.77; 1.65] | 0.37 | 0.5456 |
| – Secondary diagnosis somatoform disorders (F45) | 1.09 | [0.93; 1.28] | 1.16 | 0.2816 |
| – Charlson index (somatic comorbidities) | 1.09 | [0.99; 1.20] | 2.82 | 0.0931 |
| – Secondary diagnosis tobacco (F17) | 1.07 | [0.87; 1.31] | 0.43 | 0.5097 |
| – Secondary diagnosis anxiety disorders (F40–F41) | 0.99 | [0.87; 1.14] | 0.01 | 0.9042 |
| – Secondary diagnosis eating disorders (F50) | 0.92 | [0.72; 1.18] | 0.39 | 0.5322 |
| – Secondary diagnosis adjustment disorders (F43.2) | 0.75 | [0.53; 1.05] | 2.78 | 0.0953 |
| Treatment-related factors | ||||
| – Guideline-adherent follow-up treatment with antidepressants | 1.49 | [1.35; 1.64] | 63.13 | <0.0001 |
| – Treatment in hospital/department of psychiatry*2 | 1.30 | [1.12; 1.51] | 11.97 | 0.0005 |
| – Length of stay (per day) | 1.00 | [1.00; 1.00] | 0.19 | 0.6603 |
| – Treatment units (per 25 min TU per week) | 0.96 | [0.95; 0.98] | 14.94 | 0.0001 |
| – Guideline-adherent follow-up treatment with psychotherapy | 0.78 | [0.67; 0.90] | 10.67 | 0.0011 |
*1 95% confidence intervals*2 As opposed to hospital/department of psychosomatic medicine TU, treatment unit