The Accuracy of the PHQ-2 Alone and Combined With the PHQ-9 to Identify Major Depression in Traumatic Brain Injury

The 2-step PHQ-2/PHQ-9 screening process described here represents an efficient, reliable, and valid means of detecting MDD in people with TBI. Results suggest that the generic PHQ-2/PHQ-9 depression screening parameters adopted within large U.S. federal entities may disadvantage people with TBI.