Table 5.
The effect of training track, season, and rainfall on the number of musculoskeletal injuries in thoroughbred racehorses training and racing in South-East Queensland.
| Horses of all Ages | Univariable IRR † (95% CI) | p-Value |
|---|---|---|
| Track | ||
| Eagle Farm | ref | * |
| Doomben | 0.84 (0.35, 2.01) | 0.7 |
| Deagon | 0.68 (0.42, 1.09) | 0.10 |
| Doomben and Eagle Farm | 0.85 (0.47, 1.53) | 0.6 |
| Season | ||
| Winter | ref | * |
| Spring | 0.98 (0.67, 1.44) | 0.9 |
| Summer | 1.61 (1.06, 2.46) | 0.03 |
| Autumn | 0.9 (0.55, 1.50) | 0.7 |
| Rainfall | ||
| Total rainfall (mm) | 1.00 (1.00, 1.00) | 0.8 |
| Horses > 2 years old | Univariable IRR (95% CI) | p–Value |
| Track | ||
| Eagle Farm | ref | * |
| Doomben | 0.87 (0.79, 2.50) | 0.3 |
| Deagon | 0.62 (0.29, 1.30) | 0.2 |
| Doomben and Eagle Farm | 1.28 (0.63, 2.60) | 0.5 |
| Season | ||
| Winter | Reference | * |
| Spring | 0.75 (0.51, 1.12) | 0.2 |
| Summer | 0.99 (0.43, 2.37) | >0.9 |
| Autumn | 0.62 (0.36, 1.05) | 0.08 |
| Rainfall | ||
| Total rainfall (mm) | 1.00 (0.99, 1.00) | 0.2 |
| Two-year-old horses | Univariable IRR (95% CI) | p-Value |
| Track | ||
| Eagle Farm | Reference | * |
| Doomben | 0.73 (0.32, 1.67) | 0.46 |
| Deagon | 0.81 (0.53, 1.22) | 0.31 |
| Doomben and Eagle Farm | 0.47 (0.17, 1.27) | 0.11 |
| Season | ||
| Winter | ref | * |
| Spring | 1.73 (0.83, 3.61) | 0.15 |
| Summer | 3.00 (1.89, 4.77) | <0.001 |
| Autumn | 1.32 (0.65, 2.68) | 0.37 |
| Rainfall | ||
| Total rainfall (mm) | 1.00 (1.00, 1.00) | 0.08 |
† IRR = Incident rate ratio. CI = Confidence Interval Univariable Poisson regression models shown. Variables significant at p < 0.05 indicated in bold. Winter = June to August, Spring = September to November, Summer = December to February, Autumn = March to May. * not applicable as reference category.