Table 4.

Comparison of AUCs by Demographic Variables for CE Group

			CI (95)
Variables	AUC	SE	Lower	Upper	X2	P	Cramer V
Child sex					8.25	0.004	0.071
Male	0.867	0.010	0.847	0.887
Female	0.918	0.014	0.890	0.946
Child age					0.28	0.600	0.013
< 55.7 months	0.888	0.013	0.863	0.913
> = 55.7 months	0.879	0.011	0.858	0.901
Maternal Education					24.59	<0.001	0.122
HS diploma or less	0.850	0.023	0.805	0.895
Associate degree/some college	0.855	0.017	0.822	0.888
Bachelor degree	0.937	0.010	0.917	0.957
Masters or advanced degree	0.900	0.017	0.867	0.933
Maternal race					12.96	0.002	0.091
Black	0.814	0.023	0.768	0.860
Other	0.889	0.026	0.837	0.938
White	0.905	0.009	0.887	0.923
Household income					19.58	<0.001	0.111
<$30,000	0.831	0.021	0.790	0.872
$30,000–$70,000	0.897	0.015	0.868	0.926
$70,000–110,000	0.936	0.012	0.912	0.959
$110,000+	0.912	0.015	0.880	0.941

AUC, Area under ROC; CE, Clinical Educational Source.