Measure

Stillbirth^a % (n/n)

OR^b

95% CI^c

p-value

Parity group:

primiparous

8.6 (34/396)

1

Referent

multiparous

3.5 (34/975)

2.66

2.47 - 2.77

<0.001

Calf sex:

Female

3.8 (26/681)

1

Referent

Male

6.1 (42/690)

0.61

0.51 - 0.74

<0.001

Calving difficulty group^d

Unassisted

3.73 (48/1288)

1

Referent

Assisted

24.09 (20/83)

0.16

0.11 - 0.14

<0.001