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Table 4 Univariate and multivariate (model-averaged) odds ratio of potential risk factors for human infection with T. cruzi in residents of Area I of Pampa del Indio, Chaco

From: High levels of human infection with Trypanosoma cruzi associated with the domestic density of infected vectors and hosts in a rural area of northeastern Argentina

Predictor

Mean (SD)

Univariate analysis

Multivariate analysis (n = 573)

OR

95% CI

OR

95% CI

Born after the onset of the intervention

 No

 

1.00

1.00

 Yes

 

0.08

0.01–027

0.11

0.02–0.52

Age

22.3 (18.4)

1.97

1.64–2.37

2.54

2.01–3.20

Goat-equivalent index

9.5 (23.2)

0.85

0.70–1.02

0.89

0.73–1.09

Ethnic group

 Creole

 

1.00

1.00

 Qom

 

1.32

0.89–1.94

0.65

0.39–1.09

Gender

 Female

 

1.00

1.00

 Male

 

1.15

0.82–1.61

1.14

0.77–1.71

Infected-bug abundance

 No bugs

 

1.00

1.00

 No infected bugs

 

0.98

0.62–1.53

1.17

0.70–1.97

 ≥ 1 infected bugs

 

3.75

2.50–5.67

2.88

1.68–4.94

No. of cohabiting infected persons

1.8 (1.9)

1.91

1.60–2.31

2.29

1.80–2.92

Number of cohabiting infected dogs or cats

 0

 

1.00

 1

 

0.63

0.36–1.11

 ≥ 2

 

1.70

1.02–2.84

  1. Abbreviations: CI confidence interval, OR odds ratio