Table 6.
Body weight change (slope) for three age categories of Labrador retrievers up to death/censor date 31 July 2014
| Longevity category | Up to 9 years | 9–13 years | After 13 years | ||||||
|---|---|---|---|---|---|---|---|---|---|
| N | Mean (in kg/dog/year) | SEM | N | Mean (in kg/dog/year) | SEM | N | Mean (in kg/dog/year) | SEM | |
| Expected (≥9 to ≤12.9 years) | 13 | 0.59 | 0.3 | 13 | −0.15 | 0.31 | N/A | ||
| Long (≥13 to ≤15.5 years) | 15 | 0.52 | 0.28 | 15 | −0.91* | 0.28 | 15 | −1.41 | 0.68 |
| Exceptional (>15.6 years) | 11 | 0.4 | 0.36 | 11 | 0.53* | 0.32 | 11 | −1.31 | 0.74 |
Means within the 9–13 years column which share an asterisk (*) are significantly different (P = 0.007); none of the means within the other two columns (up to 9 years, after 13 years) show any significant differences among them (P > 0.05)
N number of dogs, SEM standard error of the mean