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Table 5

Univariate analysis of reproductive risk factors of appendicular bone sarcoma in a cohort of 275 female Rottweiler dogs

Risk factorDogs with bone sarcomaDogs without bone sarcomaP
Total no. 28 dogs 247 dogs  
Pregnancy   0.22 
 Yes 11 dogs 127 dogs  
 No 17 dogs 120 dogs  
Duration of reproductive activitya 2.6 ± 1.5 yr 2.5 ± 1.5 yr 0.97 
No. of litters 2.0 ± 0.9 litters 2.1 ± 1.1 litters 0.79 
No. of live births 10.2 ± 6.5 puppies 11.9 ± 9.1 puppies 0.54 
Age at first pregnancy 3.4 ± 1.2 yr 3.6 ± 1.1 yr 0.47 
Risk factorDogs with bone sarcomaDogs without bone sarcomaP
Total no. 28 dogs 247 dogs  
Pregnancy   0.22 
 Yes 11 dogs 127 dogs  
 No 17 dogs 120 dogs  
Duration of reproductive activitya 2.6 ± 1.5 yr 2.5 ± 1.5 yr 0.97 
No. of litters 2.0 ± 0.9 litters 2.1 ± 1.1 litters 0.79 
No. of live births 10.2 ± 6.5 puppies 11.9 ± 9.1 puppies 0.54 
Age at first pregnancy 3.4 ± 1.2 yr 3.6 ± 1.1 yr 0.47 
a

Duration of reproductive activity = total number of years during which she was bred.

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