. Author manuscript; available in PMC: 2014 Aug 7.

Published in final edited form as: Schizophr Res. 2007 Apr 12;93(0):169–177. doi: 10.1016/j.schres.2007.02.018

Table 3.

Receiver – Operator Characteristics (ROC) Analysis results. Area under the ROC curves and the 95% Confidence Intervals for each of the Proxy measures included for analysis.

Area Under the Curve
Test Result Variable(s)	Area	Std. Error^a	Asymptotic Sig.^b	Asymptotic 95% Confidence Interval
Test Result Variable(s)	Area	Std. Error^a	Asymptotic Sig.^b	Lower Bound	Upper Bound

PANSS Negative	.825	.036	.000	.754	.895
PDS1	.765	.043	.000	.680	.849
PDS2	.861	.034	.000	.793	.928
Blunted affect	.840	.035	.000	.771	.909
Emotional withdrawal	.763	.042	.000	.681	.846
Factor 2	.842	.034	.000	.775	.909

The test result variable(s): PANSS Negative, Proxy 1, Proxy 2, Blunted affect, Emotional withdrawal, Factor 2 have at least one tie between the positive actual state group and the negative actual state group. Statistics may be biased.

Under the nonparametric assumption

Null hypothesis: true area = 0.5