Table 1. Mean isotopic changes for δ13C after lipid extraction (including P values and sample sizes from comparison T-tests) of dog biscuits, peanuts and badger blood serum and badger red blood cells (RBCs).
| mean δ13C change (‰) (± sd) | effect of lipid extraction | sample size | |
| dog biscuit | 0.9 (±0.3) | P<0.01 | 5 |
| peanut | 3.1 (±0.2) | P<0.001 | 5 |
| badger serum | n/a | NS | 5 |
| badger RBCs | −0.8 (±0.2) | P<0.001 | 5 |
Reported values are provided with only one decimal place, to reflect the accuracy and precision of the analytical machinery.