Table 6.

Area under the curve (AUC) from receiver operator characteristic curve analysis.

Area	Std. errora	Asymptotic sig.b	Asymptotic 95% confidence interval
			Lower bound	Upper bound
0.892	0.049	0.000	0.796	0.988

^aUnder the nonparametric assumption. ^bNull hypothesis: true area = 0.5.