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Table 3 Multivariate models for prediction of Length of stay

From: Predictors for length of hospital stay in patients with community-acquired Pneumonia: Results from a Swiss Multicenter study

Parameters Initial Prediciton model Follow-up Prediciton model
  HR (95%CI) p Points HR (95%CI) p Points
Age (age <60 Reference group)       
Age 60–70 years 0.81 (0.59-1.11) 0.187 1 0.74 (0.54-1.01) 0.06 2
Age 70–80 years 0.65 (0.46-0.92) 0.014 3 0.59 (0.42-0.82) 0.002 4
Age >80 years 0.65 (0.46-0.92) 0.015 3 0.53 (0.37-0.76) <0.001 4
Past medical history       
Fever (Temp > 38.5°C) 1.1 (0.89-1.36) 0.372   1.16 (0.93-1.44) 0.181  
Active smoker 1.04 (0.82-1.33) 0.745   0.98 (0.76-1.24) 0.839  
Regular alcohol consumption 1.22 (0.89-1.51) 0.261   1.36 (0.91-1.69) 0.34  
Clinical presentation       
BD systolic < 90 mmHg 0.78 (0.46-1.32) 0.348   1.29 (0.74-2.25) 0.362  
Respiratory rate > 20 pm 0.76 (0.61-0.95) 0.014 2 0.74 (0.6-0.92) 0.006 2
Confusion 0.99 (0.69-1.41) 0.939   1.03 (0.72-1.48) 0.855  
Situation at home       
Nursing home* 0.84 (0.67-1.06) 0.138 1 0.72 (0.57-0.92) 0.008 2
Comorbid condition       
Chronic pulmonary disease 0.70 (0.56-0.87) <0.001 3 0.65 (0.52-0.81) <0.001 3
Congestive heart failure 0.94 (0.71-1.24) 0.645   0.94 (0.71-1.24) 0.655  
Diabetes 0.77 (0.59-1.01) 0.062 2 0.68 (0.51-0.89) 0.006 3
renal failure 0.99 (0.76-1.29) 0.956   1.19 (0.9-1.56) 0.214  
Initial blood analysis       
Procalcitonin 0.1-0.25 ng/L 1.36 (0.97-1.89) 0.072   1.31 (0.94-1.84) 0.111  
Procalcitonin 0.25-0.5 ng/L 1.77 (0.88-2.64) 0.151   1.86 (0.85-2.79) 0.221  
Procalcitonin >0.5 ng/L 1.12 (0.8-1.58) 0.5   1.24 (0.88-1.76) 0.217  
C-reactive protein 50–100 mg/dl 0.89 (0.63-1.28) 0.537   0.97 (0.68-1.39) 0.882  
C-reactive protein 100–150 mg/dl 1.06 (0.76-1.46) 0.735   1.07 (0.77-1.48) 0.701  
C-reactive protein > 150 mg/dl 0.76 (0.57-1.01) 0.057   0.87 (0.65-1.15) 0.325  
Nutrition marker       
Initial albumin level <30 g/dl 0.81 (0.6-1.08) 0.153   0.77 (0.58-1.03) 0.082 2
Severity of CAP       
Multilobar CAP 0.68 (0.45-1.03) 0.066 3 0.92 (0.61-1.38) 0.684  
Pneumonia severity index (per increase in class) 0.79 (0.69-0.91) <0.001 2 0.81 (0.7-0.93) 0.003 1
Follow up history not available on admission      
Positive blood cultures     0.89 (0.62-1.27) 0.509  
ICU transfer during hospitalisation     0.43 (0.29-0.66) <0.001 5
Development of empyema     0.33 (0.19-0.57) <0.001 6
  1. *or needing regular nursing assistance at home.