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Table 5 Models of multiple logistic regressions

From: Determination of puberty in gilts: contrast of diagnostic methods

Model

Variable

Coefficient (β)

Standard error

Wald χ2

P Value

Odds ratio

95% CI

Variables not in the equation

Lower

Upper

I

Intercept

−8.666

2.365

     

Body condition, live weight (estimated)

 

Vaginal length (cm)

0.22

0.083

7.096

0.008

1.247

1.060

1.466

 
 

Backfat (mm)

0.511

0.155

10.832

0.001

1.666

1.229

2.258

 

II

Intercept

−5.036

1.525

     

Body condition, live weight (estimated), vaginal length

 

Backfat (mm)

0.338

0.173

3.816

0.051

1.402

0.999

1.968

 
 

P4 (ng/ml)

1.907

0.955

3.984

0.046

6.731

1.035

43.768

 

III

Intercept

3.761

1.012

     

Body condition, live weight (estimated) vaginal length, backfat, P4

 

V1 /DELTA

−6.204

1.252

24.563

 < 0.001

0.002

0.000

0.024

 

IV

Intercept

−7.645

4.243

     

Body condition, live weight (estimated) backfat, P4

 

Vaginal length (cm)

0.544

0.234

5.420

0.020

1.723

1.090

2.725

 
 

V1/W3

−7.150

2.224

10.334

0.001

0.001

0.000

0.061

 

V

Intercept

−0.341

1.396

     

Body condition, live weight (estimated), vaginal length, backfat

 

P4 (ng/ml)

1.279

1.115

1.314

0.252

3.592

0.403

31.969

 
 

V2/W3

−2.993

0.991

9.127

0.003

0.050

0.007

0.349

 

VI

Intercept

3.714

1.012

      
 

V1/W3

−5.240

1.126

21.653

 < 0.001

0.005

0.001

0.048

 

VII

Intercept

2.225

0.526

      
 

V2 /W3

−2.972

0.664

20.037

 < 0.001

0.051

0.014

0.188