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Table 4 Multivariable logistic regression analysis for risk factors associated with subclinical mastitis

From: Prevalence, antimicrobial susceptibilities and risk factors of Methicillin resistant Staphylococcus aureus (MRSA) in dairy bovines

Variable

B

S.E

OR

95% C.I. for OR

P value

Lower

Upper

Age (years)

Ā Ā 2ā€“4

0.223

0.363

1.25

0.613

2.547

0.540

Ā Ā >ā€‰4ā€“8

0.920

0.288

2.51

1.428

4.414

0.001

Hand washing between milkings

Ā Ā No

1.881

0.286

6.56

3.745

11.503

ā€‰<ā€‰0.0001

Parity

Ā Ā Ā Ā Ā 

0.029

Ā Ā 3ā€“4

0.426

0.349

1.53

0.773

3.034

0.222

Ā Ā >ā€‰4

0.976

0.380

2.65

1.260

5.594

0.010

Lactation stage

Ā Ā >ā€‰60ā€“120

0.283

0.379

1.33

0.631

2.789

0.456

Ā Ā >ā€‰120

0.998

0.389

2.71

1.266

5.813

0.010

Teat dipping

Ā Ā No

1.581

0.708

4.86

1.215

19.456

0.025

History of previous mastitis

Ā Ā Yes

1.073

0.333

2.93

1.523

5.620

0.001

  1. BĀ Logistic regression coefficient, SEĀ Standard error, ORĀ Odds ratio, CIĀ Confidence interval