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Table 2 Final General Linear Model for the incidence rate of CM.

From: Managerial and environmental determinants of clinical mastitis in Danish dairy herds

Variable Description Code Values Correlation coefficient estimate Type III p-value
Region of Denmark OMR Region 5 -5.652 <.0001
   Region 7 -0.196 -
   Region 9 - -
Who takes care of the cows? PASSER_1 Husband -3.349 0.0145
   Wife - -
Age of cow house floor ALDGM_12 Less then 20 -3.907 0.0015
   Over 20 years -  
How do you handle cows with mastitis apart from the veterinary treatment YVSYG_38 Use Antibiotics -11.612 0.0086
   Do nothing -  
How do you handle lame cows apart from veterinary treatment KLOVL_42 Trim & Clean 2.843 0.0308
   Do nothing -  
Diagnostic criteria for CM (1) SLEMT_57 milk & gland -5.491 <.0001
   milk only -  
Which cows are trimmed KLOVH_64 Trim selected cow -4.140 0.0033
   Trim all cow -  
Approximate what percentage of the cows had claw diseases during the recent year (2) UKLOV_43 % of cows with claw disease 0.367 0.0010
Daily milk production per cow (3) MILK Kg/day/cow 1.256 <.0001
  1. (1) Diagnostic criteria was forced into the multivariable analysis
  2. (2) When claw disease increased by 10%, the mastitis incidence rate was increased by 3.67 cases/100-cow years.
  3. (3) When milk production increased by 10 kg, the mastitis incidence rate was increased by 12.56 cases/100-cow years.