Table 2 Summary of logistic modelling of risk factors for clinical mastitis in heifers on the day of calving in eleven Estonian dairy herds.

Model 1

Tiestall, short stall-length (≤ 175 cm), vs. tiestall, long stall-length (> 175 cm)

27/14

214/168

2.12

0.32–14.2

0.43

Freestall vs.tiestall, long stall-length

27/14

613/168

0.60

0.09–3.75

0.58

Model 2

Freestall

27

613

0.39

0.85–1.83

0.237

Tiestall

41

382

1

>14 day between movement to calving facility and day of calving

32

419

3.39

1.42–8.07

0.006

>14 days between movement to calving facility and day of calving

36

576

1

Tiestall and >14 days

16

260

1

Tiestall and ≤14 days

25

122

5.91

1.98–17.66

0.001

Freestall and >14 days

20

284

0.78

0.13–4.57

0.79

Freestall and ≤14 day

7

329

1.08

0.16–7.05

0.94