Table 4.

Classification Performance of Brief Risk Factor Measure Sets to Predict Probable PTSD or Depression

Risks Assessed (items per risk)	Number of Items	Positive Classification Rule	AUC	% Correctly classified	SE	SP
Negative Thoughts (6)	21	3 or more risks	.89	80%	.90	.77
Post-trauma Life Stress (2)
Post-Trauma Social Constraints (3)
Post-Trauma Social Support (3)
Acute Stress Symptoms (6)
Childhood Home Life (1)
Four Measures Collected Early:	18	2 or more risks	.86	76%	.85	.73
Negative Thoughts
Post-Trauma Social Constraints
Post-Trauma Social Support
Acute Stress Symptoms
Four Measures Collected Early for Racial/Ethnic Minority Subjects:	18	2 or more risks	.80	75%	.76	.75
Negative Thoughts
Post-Trauma Social Constraints
Post-Trauma Social Support
Acute Stress Symptoms

Note: Brief risk measures contain the same specific items for all analyses reported.