Table 1.

Socio-demographic characteristics of the 432 blood donors in Durango, Mexico.

	Donors studieda		Donors positive for anti-T. gondii antibodies
Characteristic	No.	%	No.	%
Gender
Male	374	86.6	28	7.5
Female	58	13.4	4	6.9
Age groups (years)
18–24	135	31.3	10	7.4
25–34	161	37.3	7	4.3
35–60	136	31.4	15	11
Born in Mexico
Yes	427	99.8	31	7.3
No	1	0.2	0	0
Residence Place
Durango State	424	98.1	31	7.3
Other Mexican State	7	1.6	0	0
Abroad	1	0.2	0	0
Residence area
Urban	304	71.5	20	6.6
Suburban	45	10.6	6	13.3
Rural	76	17.9	5	6.6
Educational level
No education	38	9	6	15.8e
Up to 12 years (College)	295	69.7	21	7.1
13–19 years (Undergraduate)	88	20.8	4	4.5
Graduate	2	0.5	0	0
Occupation
No laborerb	207	48.3	14	6.8
Laborerc	143	33.3	12	8.4
Other/unemployedd	79	18.4	5	6.3
Housing conditions index
Good	215	62.3	16	7.4
Regular	95	27.5	10	10.5
Bad	35	10.1	0	0

^aBlood donors with available data.

^bNon laborer = Professional, businessman, employee.

^cLaborer = Farmer and worker in factory or construction areas.

^dOther/unemployed = student and housewife.

^eStatistically significant difference among the educational level groups by X² for trend: p = 0.04.