Table 1.

Descriptive statistics of the study population and univariate analysis of predictors of T. gondii seropositivity

Variable	Level	Participants, N (% of total)	T. gondii seropositive, N (row %)	p value
All participants		694 (100%)	67 (9.7%)	na
Subset of participants by recruitment site	EPA	348 (50%)	25 (7.2%)
	NIEHS	346 (50%)	42 (12.1%)	0.03
Age (years)	18-29	206 (30%)	5 (2.4%)
	30-39	138 (20%)	8 (5.8%)
	40-49	130 (19%)	18 (14%)
	50-59	152 (22%)	21 (14%)
	60-85	68 (10%)	15 (22%)	< 0.0001*
BMI (kg/m2)	Underweight (<  18.5)	7 (1.0%)	1 (14%)
	Normal Weight (18.5 - 24.9)	226 (33%)	18 (8.0%)
	Overweight (25.0 - 29.9)	209 (30%)	21 (10%)
	Obese (≥ 30)	252 (36%)	27 (11%)	0.7
Gender	Male	264 (38%)	28 (11%)
	Female	430 (62%)	39 (9.1%)	0.5
Race	White	376 (54%)	30 (8.0%)
	Black or African American	187 (27%)	22 (12%)
	American Indian or Alaska Native	2 (0.3%)	0 (0%)
	Asian or Pacific Islander	9 (1.3%)	0 (0%)
	Other	17 (2.4%)	0 (0%)	0.3
	Not reported	103 (15%)	15 (15%)
Ethnicity	Non-Hispanic	558 (80%)	50 (9.0%)
	Hispanic	34 (4.9%)	3 (8.8%)	1
	Not reported	102 (15%)	14 (14%)
History of living on a farm	No	539 (78%)	43 (8.0%)
	Yes	151 (22%)	24 (16%)	0.004
	Not reported	4 (1.9%)	0 (0%)
Drinking water supply	Private well	115 (17%)	8 (7.0%)
	Public system	573 (83%)	59 (10%)	0.3
	Not reported	6 (0.9%)	0 (0%)
Self-reported cardiovascular disease	No	578 (83%)	55 (9.5%)
	Yes	8 (1.2%)	0 (0%)	0.4
	Not reported	108 (16%)	12 (11%)
Self-reported diabetes	No	634 (91%)	59 (9.3%)
	Yes	57 (8.2%)	7 (12%)	0.5
	Not reported	3 (0.4%)	1 (33%)
Smoking habits	Non-smoker	531 (77%)	42 (7.9%)
	Current smoker	159 (23%)	25 (16%)	0.003
	Not reported	4 (0.6%)	0 (0%)

^* Cochran-Armitage test for trend was used