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Table 4 Prediction of the length of stay by psychopathology and further characteristics (N = 2,939)

From: Does psychopathology at admission predict the length of inpatient stay in psychiatry? Implications for financing psychiatric services

  Linear regression models Logistic regression models
  EXP (B) * EXP (95% CI) * Corr. R2 EXP (B) EXP (95% CI) Nagelkerke R2
Syndrome scores & further characteristics   Model 5    Model 6  
Intercept 21.08 18.33-24.23   0.925   
Crisis intervention, yes 0.53 0.49-0.56 0.158 0.29 0.24-0.34 0.152
Apathy 1.03 1.02-1.04 0.182    
Acute care, yes 0.73 0.67-0.78 0.202 0.47 0.39-0.58 0.176
Substance disorder, yes 0.78 0.72-0.83 0.219 0.53 0.44-0.64 0.203
Severity of illness, moderate to severe 1.27 1.19-1.37 0.233 1.72 1.43-2.06 0.221
Age 1.01 1.00-1.01 0.238 1.01 1.01-1.02 0.232
Psychotherapy, yes 1.27 1.12-1.43 0.241 1.83 1.32-2.53 0.237
Depressive syndrome     1.30 1.10-1.54 0.240
Compulsory medication, yes 1.33 1.16-1.53 0.244 1.64 1.15-2.33 0.243
Compulsory admission, yes 0.91 0.85-0.99 0.246    
Personality disorder     0.72 0.55-0.95 0.245
Symptoms & further characteristics   Model 7    Model 8  
Intercept 21.18 18.42-24.37   0.879   
Crisis intervention, yes 0.52 0.49-0.56 0.158 0.29 0.24-0.34 0.152
Acute care, yes 0.73 0.68-0.79 0.181 0.48 0.39-0.58 0.176
Substance disorder, yes 0.78 0.73-0.84 0.202 0.54 0.45-0.65 0.203
Severity of illness, moderate to severe 1.27 1.18-1.36 0.221 1.68 1.40-2.02 0.221
Social withdrawal (apathy), moderate to severe 1.17 1.08-1.26 0.232    
Age 1.00 1.00-1.01 0.237 1.02 1.01-1.02 0.232
Social withdrawal (apathy), moderate to severe     1.46 1.21-1.77 0.239
Disturbance of vitality (depressive syndrome), moderate to severe 1.13 1.04-1.23 0.241    
Psychotherapy, yes 1.25 1.22-1.41 0.244 1.85 1.34-2.55 0.244
Compulsory medication, yes 1.31 1.13-1.49 0.247    
Ruminating (depressive syndrome), moderate to severe 1.11 1.02-1.21 0.249    
Morning depressiveness (depressive syndrome), moderate to severe 1.21 1.03-1.42 0.250 1.83 1.17-2.86 0.247
Compulsory medication, yes     1.60 1.13-2.28 0.249
Lethargy (apathy), moderate to severe 1.09 1.01-1.21 0.251    
Personality disorder, yes 0.90 0.81-0.99 0.252 0.75 0.57-0.99 0.251
  1. Abbreviations: LOS = length of stay. * EXP (B), EXP (95% CI): Back-transformed regression coefficient and 95% confidence interval from the logarithmised scale to the original scale.
  2. LOS ≤ 23 days (median) vs. LOS > 23 days (median) was used as the dependent variable. In model 6, syndrome scores were split at the median (≤ median vs. > median): apathy > 3 (median) vs. ≤ median; depressive syndrome > 4 (median) vs. ≤ median.