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Table 7 Results of the Cobb–Douglas (CD) and Flexible AM General Surgery models

From: Using flexible regression models for calculating hospital’s production functions

Model

Effects

Coefficients

df

P-value

R2(×100%)

AIC

CD

Beds

0.645

1.00

< 0.001

  

FTEs

0.656

1.00

< 0.001

  

Beds X FTEs

− 0.054

1.00

0.364

96.30

−46.109

Year

−0.002

1.00

0.789

  

AM

s (Beds)

1.00

0.330

  

s (FTEs)

1.00

< 0.001

  

s (Beds,FTEs)

12.88

< 0.001

98.30

−46.246

Year

−0.009

1.00

0.441

  
  1. AIC Akaike Information Criterion, df degrees of freedom, s() smoother using thin plate splines