Models 1: Stratified by Race/Ethnicity			Models 2: Stratified by Race/Ethnicity and Sex
	White NH	Black NH	Mexican American	White NH		Black NH		Mexican American
				Male	Female	Male	Female	Male	Female
Wald test of exogeneity
chi2	20.18	1.85	0.45	12.33	7.20	2.62	0.64	0.32	0.18
Prob > chi2	0.000	0.174	0.504	0.000	0.007	0.106	0.423	0.572	0.670