Determinants of Aedes mosquito density as an indicator of arbovirus transmission risk in three sites affected by co-circulation of globally spreading arboviruses in Colombia, Ecuador and Argentina

Table 3 Mixed-effects regression incidence rate ratio (IRR) values, the two boundaries of the 95% confidence interval (IRR 2.5% and 97.5% CI) and the P value, for each predictor included in the final model of household female Aedes mosquito density for the entire dataset across study sites

Predictor^a	Level^a	IRR	IRR 2.5% CI	IRR 97.5% CI	P
Number of occupants		1.08	1.01	1.14	0.012*
Number of occupants who study		1.01	0.95	1.08	0.660
Years spent living in household		1.20	1.11	1.29	< 0.001*
Arbovirus knowledge		0.94	0.89	1.00	0.042*
Wealth index	Lowest	Reference
	Middle	0.89	0.76	1.05	0.149
	Highest	0.78	0.66	0.92	0.004*
Using bed net	No	Reference
Using bed net	Yes	1.31	1.07	1.59	0.007*
Emptying containers	No	Reference
Emptying containers	Yes	0.79	0.67	0.92	0.003*
Presence of points of entry for mosquitoes	No	Reference
Presence of points of entry for mosquitoes	Yes	1.51	1.30	1.76	< 0.001*
Presence of green areas around house	No	Reference
Presence of green areas around house	Yes	1.10	0.96	1.26	0.152
Presence of herbs	No	Reference
Presence of herbs	Yes	0.86	0.75	0.99	0.034*
Presence of other/decorative vegetation	No	Reference
Presence of other/decorative vegetation	Yes	1.52	1.22	1.88	< 0.001*

Estimation of model coefficients was conducted on a total of 741 households (68% of the full dataset). Average proportion of variance explained by random-effects factors, i.e. month, neighborhood and country was 0.51, 0.19 and 0.00, respectively
^aPredictors that are underlined have an IRR that is significantly different from 1
*Significant at a threshold α = 0.05

ISSN: 1756-3305