The Pampa del Indio project: sustainable vector control and long-term declines in the prevalence and abundance of Triatoma infestans infected with Trypanosoma cruzi in the Argentine Chaco

Table 2 Results of random-intercept multiple logistic regression analysis of Trypanosoma cruzi infection in Triatoma infestans collected in domiciles, kitchens or storerooms across operational areas in Pampa del Indio, 2007–2016

Regression term	Levels	OR	95% CI, lower limit	95% CI, upper limit	P
Area	2	0.92	0.24	3.53	0.90
Area	3	0.51	0.23	1.14	0.10
Intervention period	Early	0.18	0.07	0.46	< 0.001
Intervention period	Late	0.24	0.08	0.70	0.009
Area × Intervention	2 × Early	0.11	0.02	0.80	0.03
	2 × Late	0.12	0.02	1.00	0.05
	3 × Early	0.40	0.07	2.32	0.31
	3 × Late	1.52	0.43	5.36	0.52
Household ethnicity	Qom	2.47	1.14	5.40	0.02
Intervention × Ethnicity	Early × Qom	8.21	2.45	27.53	0.001
Intervention × Ethnicity	Late × Qom	0.35	0.10	1.27	0.11
Stage	4	1.77	1.05	3.01	0.03
	5	5.59	3.02	10.34	< 0.001
	Adult females	13.22	6.86	25.47	< 0.001
	Adult males	10.99	5.57	21.68	< 0.001
Baseline domestic infestation	Yes	3.37	1.79	6.35	< 0.001
Intercept		0.010	0.004	0.023	< 0.001

Reference levels: area, area 1; intervention period, baseline (0 months postintervention [MPI]); household ethnicity, Creole; bug stage, third instar; domestic infestation, not infested as determined by timed searches
Qom Indigenous people, OR odds ratio

ISSN: 1756-3305