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Table 1 Comparison of the full model and the final model for EOW

From: Factors contributing to the decision to perform a cesarean section in Labrador retrievers

Variable

Full model

Final model

Adult weight of the dam

0.001

0.003

Weight of the heaviest puppy in a litter

0.000

0.000

std of the puppy weights in a litter

0.333

 

Litter size

0.128

 

Parity

0.881

 

Season of whelping

0.667

 

Number of malpositioned fetuses, linear

0.000

0.000

Number of malpositioned fetuses, quadratic

0.000

0.042

Quality of the contractions

0.000

0.000

Inbreeding coefficient of the dam

0.973

 

df

12

8

Akaike’s information criterion

896.69

858.23

Bayesian information criterion

950.73

894.25

  1. The full model was calculated with an ordered logit regression. The final model was calculated with a generalized ordered logit regression. P-values are given for each independent variable in the model