Table 2.

Stratified Demographics of NHANES Participants with a History of Farmwork, by Citizenship

		Citizen		Non-Citizen
Variable		Mean	Standard Error	Mean	Standard Error	p-value
Body Mass Index		28.52	6.33	27.37	4.66	0.038
Age in years		49.9	18.9	42.74	17.07	7.57×10−5
Poverty Index Ratio		3.13	1.68	1.41	1.07	< 2.2 ×10−16
Variable		N=1,007	%	N=237	%
Survey Year	1999–2000	139	14.9	20	9.9	9.41×10−05
	2001–2002	188	20.1	31	15.3
	2003–2004	325	34.8	33	16.3
	2005–2006	20	2.1	12	5.9
	2007–2008	66	7.1	21	10.3
	2009–2010	105	11.2	49	24.1
	2011–2012	68	7.3	28	13.8
	2013–2014	23	2.5	9	4.4
Gender	Men	378	40.5	62	30.5	0.013
	Women	556	59.5	141	69.5
Racial Ethnicity	Mexican American	125	13.4	153	75.4	< 2.2 ×10−16
	Other Hispanic	23	2.5	13	6.4
	Non-Hispanic White	622	66.6	13	6.4
	Non-Hispanic Black	129	13.8	6	3
	Other Race	35	3.7	18	8.9
Country of Birth	Born in 50 US states or DC	606	90.2	0	0	< 2.2 ×10−16
	Born in Mexico	30	4.5	71	74
	Born elsewhere	36	5.4	25	26
Education Level	Less than 9th grade	110	11.8	123	60.6	< 2.2 ×10−16
	9–11th grade	115	12.3	32	15.8
	Highschool	183	19.6	27	13.3
	Graduate/GED	234	25.1	9	4.4
	Some College or AA	290	31.1	12	5.9

P-values are derived from a chi-square test, using a Yate’s Correction where necessary, and a Wilcoxon Rank Test was completed with a Kruskall-Wallis Correction. 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.