TABLE 2.

Variables that were significantly associated with parasitism of migratory birds by I. scapularis ticks in the most-parsimonious multivariable logistic regression modela

Explanatory variableFactorbOR95% CIWald Z valued
Bird species/genusOther bird genera combinedc
Wrens8.683.95-19.075.38***
Thrushes5.873.87-8.918.31***
Wood warblers4.662.48-8.734.81***
Mimids3.371.59-5.783.37**
Capture dateOther capture datesc
Before 11 April2.331.12-4.862.25*
After 19 May1.511.33-2.792.13*
Bird observatoryOther bird observatoriesc
Atlantic, NS15.625.45-44.905.10***
Prince Edward Point, ON1.931.33-2.793.49***
  • a OR, odds ratio.

  • b NS, Nova Scotia; ON, Ontario.

  • c Reference factor.

  • d Significance is as follows: *, P < 0.05; **, P < 0.01; ***, P < 0.001.