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Table 1 Definitions for explanatory variables tested in the hierarchical model.

From: A four year longitudinal sero-epidemiology study of Neospora caninumin adult cattle from 114 cattle herds in south west England: Associations with age, herd and dam-offspring pairs

Explanatory variable Variable defined
Triplet code Treatment in the Random Badger Culling Trial (RBCT) (Bourne et al., 2007)
  Proactive – all badgers culled
  Reactive – badgers culled in response to tuberculosis herd breakdown
  Survey – no badgers culled
FMD restocked or continuously stocked Herd was totally depopulated or herd was not totally depopulated in 2001 due to the foot-and-mouth (FMD) epidemic
Geographical area Farm location
  Area A – (Gloucestershire Herefordshire/Worcestershire)
  Area B – (North East Devon South Somerset)
  Area C – (North West Devon North East Cornwall)
Log (mean herd size) The log mean number of cattle present in the herd during study period logged from the VetNet database
Cattle sex Cattle were female or male taken from the British Cattle Movement System
Origin of replacement cattle Homebred (tested in natal herd) Purchased (tested in different from natal herd)
Mean herd N caninum seroprevalence Lower or higher than the overall median herd N caninum seroprevalence of 10%
Cattle age (years) In yearly intervals from 2 years to 10+ years old