Table 2

Number of stillborn puppies per litter in relation to litter size and duration of parturition (hours from birth of the first to the last puppy).

Litter size
 Duration of parturition (hours)

No. stillborn puppies per litter
 n of litters
 Math
 SD
 n of litters
 Math
 SD
0
 65
 6.9
 2.9
 55
 7.0
 4.2
1
 12
 8.7
 1.9
 10
 10.6
 4.2
2
 8
 8.4
 2.5
 7
 9.1
 2.6
3
 9
 9.1
 2.4
 9
 18.2
 7.8
>3
 4
 10.3
 3.9
 3
 22.7
 6.6
Sum/mean
 98
 7.6
 2.9
 84
 9.5
 6.9

Indrebø et al. Acta Veterinaria Scandinavica 2007 49(Suppl 1):S2   doi:10.1186/1751-0147-49-S1-S2