Table 1

Survival data on age of dogs with osteosarcoma coded as binary data
Study (UVA/MVA) N Studied age categories (years) MST (days) HR (95 % CI) p-value
Saam 2010 (UVA) 12 <=5 1414 0.49 (0.3-1.1) 0.08
53 >5 265
Phillips 2009 (UVA) 23 <5 1263 0.034
132 >5 293
Miller 2009 (UVA) 3 <6 (reference) 0.89
73 6-10 1.09 (0.21-5.68)
7 >10 1.14 (0.28-4.71)
Liptak 2006 (MVA) 20 Older* 2.06 (1.03-4.14) 0.042
Kent 2004 (UVA) 32 <mean age** 0.156
Spodnick 1992 (MVA) 162 7-10*** vs. <0.01
<7 and >10

UVA = univariate analysis; MVA = multivariate analysis; N = number; MST = median survival time; HR = hazard ration; reference = the reference group with which the others are compared.

*MST for older dogs was significantly decreased (median age 8.3 years, range 4.5-11 years).

**Only median age was mentioned in article (8.8 years, range 2.2-16.5 years)

***Longer survival time.

* MST for older dogs was significantly decreased (median age 8.3 years, range 4.5-11).

** Median age 8.8 years, range 2.2–16.5.

*** Longer ST.

Boerman et al.

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

Open Data