Table 2.

Receiver Operating Curve (ROC) analysis of the ZBI and IEQ against the GHQ-28 and CES-D

GHQ-28 cut-off points	AUC – ZBI	AUC – IEQ	p-value 1
3/4	0.773	0.725	0.298
4/5	0.771	0.718	0.253
5/6	0.745	0.699	0.345
6/7	0.744	0.711	0.491
CES-D cut-off point
15/16	0.696	0.696	0.991

¹ p-value for the comparison of AUC’s