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.