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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