Table 2 Presence of antibodies against Phlebotomus perniciosus saliva: odds-ratios, 95% confidence intervals and significances, obtained by simple (OR crude) and multiple (OR adjusted) logistic regression models

Sex^b

 Female^a

 Male

0.92–2.15

0.112 (\(\chi^{ 2}_{\text{Wald}}\) = 2.528, df = 1)

Age group

 2–11 months^a

<0.001 (\(\chi^{ 2}_{\text{Wald}}\) = 35.190, df = 3)

<0.001 (\(\chi^{ 2}_{\text{Wald}}\) = 29.553, df = 3)

 12–35 months

0.95–4.24

0.067 (\(\chi^{ 2}_{\text{Wald}}\) = 3.360, df = 1)

1.39–9.16

0.008 (\(\chi^{ 2}_{\text{Wald}}\) = 6.953, df = 1)

 36–95 months

1.42–5.78

0.003 (\(\chi^{ 2}_{\text{Wald}}\) = 8.608, df = 1)

3.62–24.48

<0.001 (\(\chi^{ 2}_{\text{Wald}}\) = 21.224, df = 1)

 More than 95 months

3.91–16.56

<0.001 (\(\chi^{ 2}_{\text{Wald}}\) = 32.070, df = 1)

3.92–23.91

<0.001 (\(\chi^{ 2}_{\text{Wald}}\) = 24.222, df = 1)

Reproductive status^b

 Entire^a

 Neutered

3.28–8.82

<0.001 (\(\chi^{ 2}_{\text{Wald}}\) = 44.393, df = 1)

Breed^b

 Defined^a

 Mongrel

0.35–2.30

0.811 (\(\chi^{ 2}_{\text{Wald}}\) = 0.057, df = 1)

Fur length^b

 Short^a

 Medium or long

1.19–4.84

0.015 (\(\chi^{ 2}_{\text{Wald}}\) = 5.953, df = 1)

Lifestyle^b

 Domestic^a

 Shelter/stray

0.180–0.44

<0.001 (\(\chi^{ 2}_{\text{Wald}}\) = 30.684, df = 1)

Region^b

 Centre^a

0.001 (\(\chi^{ 2}_{\text{Wald}}\) = 13.693, df = 2)

 Lisbon metropolitan area

0.20–0.64

0.001 (\(\chi^{ 2}_{\text{Wald}}\) = 11.957, df = 1)

 Algarve

0.28–2.05

0.586 (\(\chi^{ 2}_{\text{Wald}}\) = 0.297, df = 1)

Other animals^b

 No^a

 Yes

0.31–1.20

0.152 (\(\chi^{ 2}_{\text{Wald}}\) = 2.053, df = 1)

Ectoparasiticides^b

 No^a

 Yes

1.98–5.96

<0.001 (\(\chi^{ 2}_{\text{Wald}}\) = 19.290, df = 1)

Clinical signs^b

 No^a

 Yes

0.89–2.28

0.138 (\(\chi^{ 2}_{\text{Wald}}\) = 2.203, df = 1)

Concomitant diseases^b

 No^a

 Yes

0.82–2.88

0.186 (\(\chi^{ 2}_{\text{Wald}}\) = 1.751, df = 1)

Phlebotomine activity period^b

 No^a

 Yes

6.90–18.90

<0.001 (\(\chi^{ 2}_{\text{Wald}}\) = 89.858, df = 1)

9.84–38.41

<0.001 (\(\chi^{ 2}_{\text{Wald}}\) = 72.947, df = 1)