Table 4. Hazard ratio of sheep approaching the end of the test as affected by drug treatment, for both the known and startle runway tests.
| Runway test | Drug | Coefficienta | SE (coeff) | Hazard ratiob | Time to approach (s)c | P value |
|---|---|---|---|---|---|---|
| Runway task | Control | Reference level | ||||
| DZP | 0.03 | 0.44 | 1.03 (0.6–1.47) | 0.97× | 0.94 | |
| mCPP | −1.92 | 0.57 | 0.15 (0.1–0.19) | 6.79× | <0.01 | |
| Runway startle task | Control | Reference level | ||||
| DZP | 0.5 | 0.45 | 1.64 (0.98–2.31) | 0.61× | 0.27 | |
| mCPP | −2.04 | 0.68 | 0.13 (0.1–0.16) | 7.7× | <0.01 | |
Notes.
a
Regression coefficient from the proportional hazards model.
b
95% CI in parentheses.
c
Calculated as 1/hazard ratio (i.e., average time taken to reach the end of the test compared with the reference level).