Household costs for personal protection against mosquitoes: secondary outcomes from a randomised controlled trial of dengue prevention in Guerrero state, Mexico

Table 1 Estimated expenditure in USD on insecticides in the three coastal regions of Guerrero State in 2010

	Acapulco	C. Grande	C. Chica
Estimated number of inhabited households (population/4.2)	188,088	98,522	102,024
Estimated number of households using insecticides^a	96,865	39,901	40,801
Amount spent on insecticides in the last month, among those using them^b	491,776	168,811	213,420
Amount spent on insecticides in the last year^c	5,901,312	2,205,732	2,561,040

^aThe proportions of households that reported using insecticides in the 2010 baseline study were: Acapulco region 51.5%, Costa Grande region 40.5% and Costa Chica region 40%
^bThe mean expenditures on insecticides in the last month were: Acapulco USD5.0; Costa Grande USD4.2; and Costa Chica USD5.2.
^cThe amount shown is calculated by multiplying the monthly amount by 12. A more conservative estimate, assuming the products are not purchased for roughly half the year, multiplies the monthly amount by 6, and gives the following annual expenditures: Acapulco USD2,950,656; C. Grande USD1,012,866; C. Chica USD1,280,520

ISSN: 1471-2458