Table 3 Descriptive statistics for risk factors associated with efficiency of anthelmintic treatment (FECR test). Estimates of the average Egg Per Gram faeces (EPG) reduction (difference between the logarithm of EPG pre-treatment and EPG post-treatment) with standard errors (SE) and P-values from bivariate and multivariate analysis are listed.
Risk factors (levels) | N | Bivariate analysis | Multivariate analysis | ||
|---|---|---|---|---|---|
Mean | p-value | Estimate (SE) | p-value | ||
Herd type | 0.0001 | 0.0001 | |||
Stud farm | 329 | 0.4614 | -0.0321 (0.0682) | ||
Riding school | 130 | 0.5911 | 0.1780 (0.0836) | ||
Pension | 88 | 0.1781 | -0.2844 (0.0810) | - | |
Other types | 58 | 0.5556 | 0 (0) | ||
Age | 0.0001 | 0.0044 | |||
Foals | 55 | 0.3415 | -0.1326 (0.0673) | ||
Youngsters | 174 | 0.5223 | -0.0918 (0.0432) | ||
Adults | 376 | 0.4438 | 0 (0) | ||
Pastures are permanent | 0.1699 | 0.0012 | |||
Yes | 438 | 0.4476 | -0.1527 (0.0471) | ||
No | 167 | 0.4819 | 0 (0) | ||
The vet gives recommendations regarding pasture hygienic conditions | 0.0650 | 0.0001 | |||
Yes | 240 | 0.3995 | -0.1666 (0.0433) | ||
No | 365 | 0.4950 | 0 (0) | ||
Treatment group | 0.0001 | ||||
Control | 233 | 0.0070 | 1 | ||
Benzimidazole | 221 | 0.5719 | 1 | ||
Pyrantel | 81 | 0.9470 | 1 | ||
Ivermectin | 70 | 1.0261 | 1 | ||
Anthelmintic resistance towards benzimidazoles in the herd | 0.1542 | ||||
Yes | 482 | 0.4388 | 1 | ||
No | 123 | 0.5286 | 1 | ||