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Table 2 Variables associated with the appearance of the vector, the canine cases, and the human cases of VL in the municipalities of São Paulo, 1997–2014

From: Dispersion of Lutzomyia longipalpis and expansion of visceral leishmaniasis in São Paulo State, Brazil: identification of associated factors through survival analysis

Variables

Non-adjusted hazard ratio (95% CI)

Adjusted hazard ratio (95% CI)

P b

Vector appearance Lu. longipalpis

 Marechal Rondon highwaya

36.69 (22.03–61.08)

20.00 (11.14–35.92)

<0.001

 Minimum temperature

3.11 (2.59–3.75)

2.47 (1.94–3.16)

<0.001

 Transverse highwaysa

3.04 (2.16–4.28)

2.16 (1.47–3.16)

<0.001

 Maximum temperature

2.01 (1.76–2.29)

1.28 (1.08–1.51)

0.004

Canine cases of VL

 Marechal Rondon highwaya

51.95 (30.87–87.41)

17.16 (8.06–36.54)

<0.001

 Mato Grosso do Sul bordera

7.50 (3.64–15.45)

3.39 (1.49–7.68)

0.004

 Minimum temperature

3.96 (3.03–5.18)

2.48 (1.56–3.95)

<0.001

 Maximum temperature

2.41 (1.98–2.92)

3.08 (1.96–4.83)

<0.001

 Presence of a prisona

2.07 (1.33–3.24)

1.87 (1.07–3.26)

0.028

 Microregion headquartersa

1.81 (1.08–3.04)

2.20 (1.20–4.03)

0.011

 Tietê Rivera

1.65 (1.13–2.40)

2.90 (1.70–4.93)

<0.001

 Precipitation

0.99 (0.99–1.00)

1.01 (1.00–1.01)

<0.001

 Rainy days

0.94 (0.93–0.96)

0.98 (0.96–1.00)

0.049

Human cases of VL

 Marechal Rondon highwaya

40.78 (24.54–67.78)

13.47 (7.23–25.10)

<0.001

 Minimum temperature

4.91 (3.48–6.91)

2.70 (1.61–4.55)

<0.001

 Presence of a prisona

2.83 (1.76–4.54)

3.82 (2.28–6.40)

<0.001

 Maximum temperature

2.61 (2.06–3.30)

2.22 (1.34–3.68)

0.002

 Precipitation

0.99 (0.99–1.00)

1.01 (1.00–1.01)

0.037

 Rainy days

0.92 (0.91–0.94)

0.97 (0.94–1.00)

0.023

  1. aReference category: No
  2. bMultiple adjusted Cox regression
  3. Abbreviation: 95% CI, 95% confidence interval