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Table 3

Multivariate cox proportional hazard models of bone sarcoma in a cohort of Rottweiler dogs

Hazard ratio (95% CI)P
Model 1 (n = 578 dogs)   
 Gender 0.90 (0.48–1.69) 0.73 
 Months sexually intact 0.99 (0.98–0.99) <0.0001 
 Adult height (cm) 1.02 (0.93–1.10) 0.73 
 Adult body weight (kg) 0.99 (0.94–1.05) 0.83 
Model 2   
 Male (n = 202 dogs)   
  Months sexually intact 0.99 (0.98–1.00) 0.003 
  Adult height (cm) 1.11 (0.95–1.29) 0.21 
  Adult body weight (kg) 0.98 (0.90–1.07) 0.72 
 Female (n = 329 dogs)   
  Mo sexually intact 0.98 (0.98–0.99) 0.001 
  Adult height (cm) 0.98 (0.89–1.08) 0.70 
  Adult body weight (kg) 0.99 (0.93–1.06) 0.75 
Hazard ratio (95% CI)P
Model 1 (n = 578 dogs)   
 Gender 0.90 (0.48–1.69) 0.73 
 Months sexually intact 0.99 (0.98–0.99) <0.0001 
 Adult height (cm) 1.02 (0.93–1.10) 0.73 
 Adult body weight (kg) 0.99 (0.94–1.05) 0.83 
Model 2   
 Male (n = 202 dogs)   
  Months sexually intact 0.99 (0.98–1.00) 0.003 
  Adult height (cm) 1.11 (0.95–1.29) 0.21 
  Adult body weight (kg) 0.98 (0.90–1.07) 0.72 
 Female (n = 329 dogs)   
  Mo sexually intact 0.98 (0.98–0.99) 0.001 
  Adult height (cm) 0.98 (0.89–1.08) 0.70 
  Adult body weight (kg) 0.99 (0.93–1.06) 0.75 
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