Table 3 P-values, odds ratios and 95% CI for odds ratios, of the predictor variables used in Ehrlichia spp., Dirofilaria immitis and Anaplasma spp. models

Ehrlichia spp.

 Habitat, outdoors

0.013

2.287

1.193–4.383

 Habitat, indoors

Ref.

 Use, hunting

0.002

0.392

0.217–0.708

 Use, companion

Ref.

 Last antiparasitic treatment, none

0.030

0.370

0.150–0.910

 Last antiparasitic treatment < 3 months

< 0.0001

0.179

0.072–0.442

 Last antiparasitic treatment 3–6 months

0.001

0.195

0.072–0.525

 Last antiparasitic treatment 6–12 months

0.007

0.178

0.051–0.625

 Last antiparasitic treatment > 12 months

Ref.

 Mean temperature < 15.9 °C

0.001

2.171

1.364–3.457

 Mean temperature ≥ 15.9 °C

Ref.

 Total annual rainfall < 554 mm

0.004

2.114

1.267–3.528

 Total annual rainfall ≥ 554 mm

Ref.

 Constant

0.001

0.151

Dirofilaria immitis

 Altitude 0–100 masl

0.019

3.213

1.210–8.534

 Altitude 101–400 masl

0.556

1.463

0.412–5.202

 Altitude 401–900 masl

Ref.

 Last antiparasitic treatment, none

0.072

0.442

0.181–1.077

 Last antiparasitic treatment < 3 months

< 0.0001

0.173

0.066–0.457

 Last antiparasitic treatment 3–6 months

< 0.0001

0.131

0.042–0.407

 Last antiparasitic treatment 6–12 months

0.746

0.837

0.286–2.449

 Last antiparasitic treatment > 12 months

Ref.

 Minimum temperature < −5.5 °C

< 0.0001

4.469

2.667–7.489

 Minimum temperature ≥ −5.5 °C

Ref.

 Constant

0.001

0.151

Anaplasma spp.

 Altitude 0–100 masl

0.010

7.126

1.614–31.469

 Altitude 101–400 masl.

0.311

2.395

0.443–12.958

 Altitude 401–900 masl

Ref.

 Last antiparasitic treatment < 3 months

0.104

0.598

0.322–1.111

 Last antiparasitic treatment 3–6 months

0.013

0.288

0.108–0.772

 Last antiparasitic treatment 6–12 months

0.085

0.168

0.022–1.281

 Last antiparasitic treatment > 12 months

0.998

0.000

0.000

 Last antiparasitic treatment, none

Ref.

 Mean temperature < 15.9 °C

<0.0001

4.242

2.302–7.820

 Mean temperature ≥ 15.9 °C

Ref.

 Constant

<0.0001

0.012