Volume 12, Number 9—September 2006
Research
Periurban Trypanosoma cruzi–infected Triatoma infestans, Arequipa, Peru
Table 1
Risk factors for Triatoma infestans in animal enclosures in a periurban community of Arequipa, Peru*
Risk factor | % of enclosures (n = 803) | Univariate analysis |
Multivariate analysis† |
|||
---|---|---|---|---|---|---|
OR (95% CI) | p value | Adjusted OR (95% CI) | p value | |||
Animal host | ||||||
Guinea pig | 24 | 1.54 (0.95–2.4) | 0.057 | 1.69 (1.05–2.74) | 0.031 | |
Rabbit | 23 | 1.48 (0.91–2.4) | 0.088 | 1.52 (0.93–2.49) | 0.099 | |
Chicken | 18 | 0.28 (0.12–0.62) | 0.001 | 0.36 (0.16-0.80) | 0.012 | |
No. animals (mean)‡ | 5.5 | 0.29§ | ||||
Material | ||||||
Wire mesh only | 17 | 0.17 (0.04–0.46) | 0.008 | 0.18 (0.06–0.53) | 0.002 | |
Unmortared brick | 19 | 2.96 (1.84–4.70) | 0.0001 | 2.02 (1.23–3.29) | 0.005 | |
Adobe | 5 | 2.73 (1.19–5.88) | 0.005 | 2.52 (1.18–5.39) | 0.017 | |
Mortared brick, sillar, or basalt | 12 | 0.50 (0.19–1.11) | 0.08 | 0.50 (0.21–1.17) | 0.11 | |
Unmortared sillar‡ | 30 | 1.69 (1.08–2.62) | 0.14 | |||
Stucco¶ | 4 | 0.00 (0.00–0.70) | 0.02 | |||
Insecticide use‡ | 15 | 1.09 (0.59–1.85) | 0.77 |
*OR, odds ratio; CI, confidence interval.
†Models were fit with generalized estimating equations appropriate for repeated measures in households.
‡Dropped from multivariate model.
§Kruskal-Wallis trend test for continuous variables.
¶Fully stuccoed enclosures were omitted from the multivariate model because none were positive for T. infestans.