TABLE 3A.

Multivariable logistic regression models (p < 0.05) for occupational injury to hired crop workers, NAWS^a U.S. during period I (2002–2004), period II (2008–2010), and period III (2014–2015).

Variable (p Valueb)	Adjusted Odds ratioc	Wald 95% CI
Period I (2002–2004)
English-speaking ability (p = 0.0003)
Not at all	1.0
A little, Somewhat	3.0	1.8	5.1
Well	1.6	0.7	3.4
Type of hire (p = 0.0048)
Contract laborer	1.0
Grower direct hire/other	2.2	1.3	3.8
Employer provides clean drinking water and disposable cups every day (p = 0.0017)
Yes	1.0
No	2.1	1.3	3.3
Migrant type (p = 0.0015)
Migrant	1.0
Nonmigrant/settled	0.5	0.3	0.7
Foreign-born (p = 0.0111)
Yes	1.0
No	2.5	1.2	4.9
Age group (years) (p = 0.1445)d
<25	1.0
25–34	0.8	0.4	1.4
35–44	0.7	0.4	1.2
45+	0.6	0.3	0.9
Period II (2008–2010)
Employer provides clean drinking water and disposable cups every day (p = 0.0129)
Yes	1.0
No	2.0	1.2	3.4
Own dwelling in U.S. (p = 0.0107)
Yes	1.0
No	0.5	0.3	0.9
Sex (p = 0.1441)e
Female	1.0
Male	1.6	0.9	3.0
Foreign-born (p = 0.4879)f
Yes	1.0
No	1.2	0.7	2.2
Period III (2014–2015)
Health condition (p < 0.0001)
No	1.0
Yes	4.5	2.7	7.5
Employer provides clean drinking water and disposable cups every day (p = 0.0106)
Yes	1.0
No	2.4	1.2	4.7
Own dwelling in U.S. (p = 0.0145)
Yes	1.0
No	2.4	1.2	4.9
Foreign-born (p = 0.1300)g
Yes	1.0
No	1.6	0.9	3.1

^aNAWS: National Agricultural Workers Survey.

^bp Value: Wald's chi-square test.

^cAdjusted odds ratio (OR_ADJ) where injury = 1 divided by weeks of farm work to incorporate an occupational exposure adjustment.

^dCovariate age increased the OR_ADJ of foreign-born by 12% and decreased the OR_ADJ of English-speaking ability “well” by 5% (period I).

^eCovariate sex decreased the OR_ADJ of “clean drinking water and disposable cups every day” by 5% (period II).

^fCovariate foreign-born decreased the OR_ADJ of “own dwelling in U.S” by 6% (period II).

^gCovariate foreign-born increased the OR_ADJ of “own dwelling in U.S.” by 10% (period III).