Table 1.

Socio-demographic characteristics of the 85 informants.

Background Characteristic		No	%	Annual Expenditure (Mexican Pesos, $)
Residence	Rural	26	31	160
	Urban	59	69	200
Gender	Female	40	47	174
	Male	45	53	200
Age	>20	2	2	200
	21–30	13	15	233
	31–40	12	14	183
	41–50	16	19	173
	51–60	20	24	210
	61–70	14	17	120
	71–85	8	9	225
Occupation	Farmer	9	11	114
	Housewife	21	25	210
	Seller	4	5	50
	Teacher	2	2	200
	Worker	40	47	181
	Other	9	10	222