Table 6.

Container characteristics associated ^a with the number of pupae per container identified as risk factors for dengue vector breeding during wet and dry season in private and public premises (outdoor and indoor)

	Dry season			Wet season
Container	IRR b	95% CI	P-value	IRR b	95% CI	P-value
Not under shrubbery	Reference			Reference
Fully or partially under shrubbery	0.81	0.43-1.50	0.497	0.96	0.61- 1.49	0.862
Used during past 7 days	Reference			Reference
Not used during past 7 days	3.48	1.71-7.05	0.001	2.44	1.60- 3.72	<0.001
Fully covered	Reference			Reference
Partially covered	0.90	0.39-2.05	0.807	6.22	2.98- 12.96	<0.001
Not covered	15.10	7.70- 29.58	<0.001	9.88	5.67- 17.19	<0.001
Localization indoor	Reference			Reference
Outdoor	3.87	2.03-7.36	<0.001	1.39	0.94- 2.04	0.092
Faucet water	Reference			Reference
Rain water	3.42	1.14- 10.26	0.028	1.28	0.79- 2.06	0.315
Filled with rain water and tap water	5.20	2.21- 12.21	<0.001	1.24	0.62- 2.50	0.538

^aResults of negative binomial regression with clustering at the study cluster level.

^bIncidence rate ratio. Example: the expected pupal count for containers not used in the past 7 days is 3.48 times higher than that for containers used in the past 7 days.