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Table 4 Logarithmic and Constant Models for Ln PD Cost (MA Database)

From: Accounting for the relationship between per diem cost and LOS when estimating hospitalization costs

 

Logarithmic Model (F)

Constant Model (G)

  

Estimate (SE)

P-Value

Estimate (SE)

P-Value

Intercept

9.281 (0.271)

<.0001

8.445 (0.037)

<.0001

Ln(LOS)

−0.315 (0.101)

0.002

NA

NA

Complication Group

Death

1.365 (0.281)

<.0001

0.903 (0.049)

<.0001

 

Bleed

0.25 (0.281)

0.375

0.258 (0.04)

<.0001

 

MI

0.107 (0.362)

0.769

0.219 (0.051)

<.0001

 

None/Other

0.110 (0.271)

0.685

0.218 (0.037)

<.0001

 

Infection

0.384 (0.315)

0.224

0.179 (0.045)

<.0001

 

>2 Compls

−0.17 (0.699)

0.808

0.173 (0.083)

0.038

 

2 Compls

−0.053 (0.307)

0.864

0.034 (0.045)

0.444

 

Renal

−0.086 (0.288)

0.765

0.013 (0.041)

0.759

 

Stroke

Reference*

Reference*

Ln(LOS) x Compl. Group

Death

−0.313 (0.106)

0.003

  
 

Bleed

−0.054 (0.107)

0.611

  
 

MI

−0.005 (0.146)

0.973

  
 

None/Other

−0.042 (0.102)

0.677

  
 

Infection

−0.113 (0.121)

0.35

  
 

>2 Compls

0.16 (0.225)

0.477

  
 

2 Compls

0.049 (0.113)

0.662

  
 

Renal

0.032 (0.108)

0.765

  
 

Stroke

Reference*

  
  1. * Patients with stroke are used as the reference category for indicators of complication: coefficients represent difference in log PD costs for each type of complication relative to stroke.