Table 1.

Stratified demographics of NHANES participants, by farmwork category.

		Non-farmworker			Farmworker
		(N=23,592)			(N=844)
		Unweighted		Weighted	Unweighted		Weighted
Variable		Mean	Std Dev	Mean, Std Dev	Mean	Std Dev	Mean, Std Dev	p-value
Body Mass Index		28.61	6.73	28.46, 6.62	28.53	5.87	28.64, 6.26	0.2864
Age in Years		47.03	18.95	45.67, 17.13	52.61	19.74	49.19, 18.06	0.0001755
		N	%	%	N	%	%
Survey Year	1999–2000	1,423	7.4	6.2	78	9.2	9.0	7.30E-08
	2001–2002	1,583	8.3	6.7	109	12.9	11.8
	2003–2004	3,075	16.0	13.4	178	21.1	26.5
	2005–2006	249	1.3	14.5	78	9.2	7.4
	2007–2008	3,641	19.0	14.7	88	10.4	7.8
	2009–2010	3,781	19.7	14.5	148	17.5	15.8
	2011–2012	3,239	16.9	14.5	89	10.5	13.3
	2013–2014	3,601	18.8	15.5	76	9.0	8.4
Gender	Men	11,558	49.0	48.5	554	65.6	61.9	5.24E-06
	Women	12,034	51.0	51.5	290	34.4	38.1
Racial Ethnicity	Mexican American	3,927	19.4	7.4	277	32.8	16.6	< 2.2E-16
	Other Hispanic	1,754	8.7	4.9	26	3.1	2.3
	Non-Hispanic White	10,871	53.8	69.6	414	49.1	70.6
	Non-Hispanic Black	1,835	9.1	11.5	87	10.3	6.1
	Other Race	1,835	9.1	6.6	40	4.7	4.3
U.S. Citizenship	Non-Citizen	2,996	12.7	8.2	217	25.7	15.7	1.12E-09
	Citizen	20,596	87.3	91.8	627	74.3	84.3
Education Level	Less than 9th grade	2,282	9.7	5.1	266	31.5	17.4	< 2.2E-16
	9–11th grade	3,903	16.5	12.3	126	14.9	12.7
	Highschool	5,715	24.2	23.9	167	19.8	22.5
	Graduate/GED	6,798	28.8	31.3	162	19.2	26.4
	Some College or AA	4,894	20.7	27.4	123	14.6	20.9

P-values are derived from a chi-square test, using a Yate’s Correction where necessary, and for continuous variables, a Wilcoxon Rank Test was used with a Kruskall-Wallis Correction (as needed). Percentages are out of the total number of respondents for that specific question. In this table, other race includes multi-racial. In this study, 9–11 grad includes 12th grade completion without a high school diploma.