Table 3. Risk factors for Triatoma infestans in rooms of human dwellings in a periurban community of Arequipa, Peru*.
| Risk factor | % of rooms (N = 1,424) | Univariate analysis† |
Multivariate logistic regression† |
|||
|---|---|---|---|---|---|---|
| OR (95% CI) | p value | Adjusted OR (95% CI) | p value | |||
| Host | ||||||
| No. persons sleeping in room | <0.001‡ | 1.63 (1.48–1.79) | <0.001 | |||
| Animal sleeping in room | 5.1 | 2.79 | <0.001 | 1.90 (1.10–3.28) | 0.021 | |
| Peridomestic infestation | ||||||
| Guinea pig enclosure | 9.1 | 1.70 (1.07–2.63) | 0.014 | 2.23 (1.30–3.82) | 0.004 | |
| Yard | 11.7 | 1.41 (0.92–2.12) | 0.09 | 2.10 (1.27–3.46) | 0.004 | |
| Sheep enclosure§ | 5.3 | 2.29 (1.31–3.90) | 0.001 | |||
| Material | ||||||
| Mortared brick | 19.0 | 2.39 (1.73–3.30) | <0.001 | 1.76 (1.15–2.71) | 0.01 | |
| Mortared sillar | 20.2 | 2.00 (1.44–2.76) | <0.001 | 1.60 (1.04–2.47) | 0.033 | |
| Fully stuccoed | 41.7 | 0.25 (0.17–0.38) | <0.001 | 0.27 (0.17–0.44) | <0.001 | |
| Unmortared sillar§ | 26.5 | 1.21 (0.81–1.78) | 0.32 | |||
| Insecticide use§ | 43.8 | 0.91 (0.68–1.22) | 0.53 | |||
*OR, odds ratio; CI, confidence interval. †Models were fit with generalized estimating equations appropriate for repeated measures in households. ‡Kruskal-Wallis trend test for continuous variable. §Dropped from the multivariate model.