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Table 3 Results of multifactorial analyses: significant risk factors for health and performance problems in dairy farms in Northern Germany

From: Case-control study on factors associated with a decreased milk yield and a depressed health status of dairy herds in northern Germany

Risk factors

Category

OR

LCL

UCL

P

Average ratio of cows per watering place

≤ 1 1

1

  

0.03032

1.01–1.5

0.208

0.06

0.69

0.0122

>  1.5

0.549

0.15

1.95

0.7308

% of pens with dirty or very dirty lying areas

None1

1

  

0.01142

1–49%

1.58

0.45

5.54

0.5431

≥ 50%

5.08

1.72

15.01

0.0062

Energy density in the roughage diets in MJ NEL/kg DM felc3

quantitative

0.045

< 0.01

0.46

0.0088

  1. 1Reference category
  2. 2global p-value
  3. 3felc for early lactating cows (first 100 days in milk)
  4. OR Odds Ratio
  5. LCL Lower Confidence Level
  6. UCL Upper Confidence Level