Table 1.
Subscripts used in survival models (program MARK)
(Details of which parameters were included in recapture models (p) and survival models (φ) are given in the right hand column.)
Analysis stage | Subscript | Description | Parameter type |
---|---|---|---|
Group level | st | Site-effect (BHP, KCS, PLJ or ROB) | φ, p |
sx | Sex-effect | φ, p | |
t | Full time-dependence | φ, p | |
Temporal | mo | Month (13 months/year) | φ, p |
seas1 | Season (Nov–Feb, Mar–May, May–Jul, Aug–Oct) | φ, p | |
seas2 | Season (winter Oct–Mar; summer Apr–Sept) | φ, p | |
yr | Year (2001, 2002 or 2003) | φ, p | |
Covariates | rf | Average rainfall during trapping session | p |
temp | Average temperature during trapping session | p | |
prevrf | Average rainfall during previous month | φ | |
prevt | Average temperature during previous month | φ | |
dens | Vole density during trapping session | φ, p | |
n | Binary score of months with reduced number of secondary sessions |
p | |
tb | Prevalence of TB lesions (population level) | φ, p | |
Individual covariates | e | Binary covariate denoting individuals from grid edge | p |
Time-specific individual covariates |
m | Trap-dependency effect | p |
indtb | Presence of TB lesions (individual level) | φ |