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Table 3 Prediction of the length of stay of psychiatric inpatients by psychopathology (N = 3,220)

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

  

Linear regression models

 

Logistic regression models

 

r **

EXP (B)+

EXP (95% CI)+

Corr. R2

rφ **

EXP (B)

EXP (95% CI)

Nagelkerke R2

Syndrome scores

Model 1

Model 2

Intercept

 

16.22

15.29-17.09

  

0.564

  

Apathy

0.211

1.04

1.04-1.06

0.040

0.131

1.39

1.19-1.62

0.023

Paranoid-hallucinatory syndrome

0.112

1.02

1.01-1.03

0.047

0.090

1.41

1.20-1.63

0.031

Psycho-organic syndrome

0.108

1.02

1.01-1.03

0.050

0.090

1.33

1.15-1.54

0.036

Depressive syndrome

    

0.096

1.36

1.16-1.59

0.042

Neurological syndrome

    

0.057

1.34

1.03-1.75

0.044

Symptoms

Model 3

Model 4

Intercept

 

17.88

17.13-18.67

  

0.76

  

Social withdrawal (apathy)

0.159

1.23

1.14-1.35

0.025

0.123

1.64

1.39-1.93

0.020

Memory disturbance (short-term) (psycho-organic syndrome)

    

0.104

1.43

1.10-1.86

0.033

Morning depressiveness (depressive syndrome)

0.130

1.57

1.33-1.85

0.036

0.110

2.71

1.82-3.98

0.044

Memory disturbance (long-term)

(psycho-organic syndrome)

    

0.103

1.51

1.11-2.03

0.047

Disturbance of vitality (depressive syndrome)

0.101

1.16

1.06-1.27

0.043

    

Cognitive inhibition

(apathy)

0.128

1.25

1.09-1.45

0.047

    

Anxious (other)

0.106

1.14

1.05-1.24

0.049

    

Lethargy (apathy)

0.106

1.13

1.03-1.25

0.051

    
  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; r = correlation coefficient (Spearman), rφ = correlation coefficient (phi statistics). ** p < 0.01.
  2. LOS ≤ 23 days (median) vs. LOS > 23 days (median) was used as the dependent variable. In model 2, syndrome scores were split at the median (≤ median vs. > median): paranoid-hallucinatory syndrome > 0 (median) vs. ≤ median, yes; vegetative syndrome > 0 (median) vs. ≤ median; apathy > 3 (median) vs. ≤ median; compulsory syndrome > 0 (median) vs. ≤ median; neurological syndrome > 0 (median) vs. ≤ median; depressive syndrome > 4 (median) vs. ≤ median.