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Table 2 Results from the Receiver Operational Characteristics (ROC) curve from the logistic regression model showing the area under curve and ranking for the different reproductive performance indicator divided on management efficiency and reproductice performance

From: Evaluation of two dairy herd reproductive performance indicators that are adjusted for voluntary waiting period

 

Reproductive performance indicator

Area under curve

95% Wald Confidence Limits

Rank

Management efficiency

CIa

0.877

0.794-0.849

5

 

FIb

0.743

0.777-0.833

6

 

IC100c

0.897

0.851-0.896

3

 

NotIC200d

0.886

0.885-0.925

4

 

PV30e

0.902

0.895-0-931

2

 

IV30f

0.999

0.990-0.996

1

Reproductive physiology

CIa

0.663

0.627-0.699

5

 

FIb

0.823

0.794-0.852

1

 

IC100c

0.707

0.673-0.742

4

 

NotIC200d

0.744

0.711-0.777

2

 

PV30e

0.727

0.694-0.760

3

 

IV30f

0.511

0.471-0.551

6

  1. aCI = Calving interval, days
  2. bFI = fertility index
  3. cIC100 = proportion of pregnant cows 100 days after calving
  4. dNotIC200 = proportion of non pregnant cows 200 days after calving
  5. ePV30 = proportion of pregnant cows 30 days after the herd VWP
  6. fIV30 = proportion of inseminated cows 30 days after the herd VWP