Table 3

Disease free interval data on age of dogs with osteosarcoma coded as binary data
Study (UVA/MVA) N Studied age categories (years) Median DFI (days) HR (95% CI) P-value
Sottnik 2010 (UVA) 39 <=8 204 0.188
30 >8 345 0.59
Sottnik 2010 (MVA) 69 >8 vs. <=8 0.42 (0.21-0.85) 0.016
Phillips 2009 (UVA) 23 <5 1035 0.022
132 >5 241
Phillips 2009 (MVA) 155 >5 vs. <5 2.1 (1.04-4.25) 0.038
Miller 2009 (UVA) 3 <6 (reference) 0.54
73 6-10 1.59 (0.33-7.71)
7 >10 1.21 (0.3-4.96)
Kent 2004 (UVA) 32 <mean 0.049*

UVA = univariate analysis; MVA = multivariate analysis; N = number; DFI = disease free interval; HR = hazard ration; reference = the reference group with which the others are compared.

* DFI in this paper was stated as ‘progression free survival’.

Boerman et al.

Boerman et al. BMC Veterinary Research 2012 8:56   doi:10.1186/1746-6148-8-56

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