Table 7.
Species differences in limb bone mineral density
| Test* | Statistic | P-value | Adj. P-value |
|---|---|---|---|
| Humeral mineral density | |||
| Overall | χ2[2] = 21.7 | < 0.001 | – |
| O – S | U[50,25] = 583 | 0.641 | 0.641 |
| O – L | U[34,25] = 1005 | < 0.001 | < 0.001 |
| S – L | U[25,25] = 515 | < 0.001 | < 0.001 |
| Radial mineral density | |||
| Overall | χ2[2] = 15.5 | < 0.001 | – |
| O – S | U[44,24] = 606 | 0.320 | 0.320 |
| O – L | U[44,21] = 734 | < 0.001 | < 0.001 |
| S – L | U[24,21] = 375 | 0.005 | 0.008 |
| Femoral mineral density | |||
| Overall | χ2[2] = 17.7 | < 0.001 | – |
| O – S | U[49,24] = 219 | < 0.001 | 0.001 |
| O – L | U[49,23] = 449 | 0.049 | 0.073 |
| S – L | U[24,23] = 354 | 0.264 | 0.264 |
| Tibial mineral density** | |||
| Overall | χ2[2] = 2.6 | 0.275 | – |
| O – S | – | – | – |
| O – L | – | – | – |
| S – L | – | – | – |
*
Because we had no a priori expectation for how limb bone mineral density should vary with levels of cursoriality, all post hoc tests are two-tailed Mann–Whitney U-tests of the null hypothesis there bone mineral densities are equal among species. Table formatting and abbreviations follow Table 4.
**
Because the overall Krukal–Wallis test comparing tibial bone mineral density among species was not significant, post hoc comparisons were not carried out.