Question 1

What is the optimal cutoff score for the PHQ-2?

Accepted Answer

A PHQ-2 score of 3 or greater is the optimal cutoff for screening, yielding 83% sensitivity and 92% specificity for major depression (Kroenke et al., 2003, Med Care). The PHQ-2 is intended as a first-step screener, and positive screens should always be followed by the full PHQ-9 or a clinical interview.

Question 2

Can the PHQ-2 be used as a standalone diagnostic tool?

Accepted Answer

No. The PHQ-2 assesses only anhedonia and depressed mood, two cardinal symptoms of depression. A positive screen (score of 3 or higher) indicates the need for further evaluation with the PHQ-9 or a clinical diagnostic interview. It should never be used alone to make treatment decisions or establish a depression diagnosis.

Question 3

Is the PHQ-2 validated for use in elderly populations?

Accepted Answer

Yes. The PHQ-2 has been validated in older adults, with studies showing sensitivity nearing 100% and specificity of 77% in non-institutionalized adults over age 65 (Li et al., 2007). However, it should be followed by a more comprehensive diagnostic process when screening is positive.

Question 4

How does the PHQ-2 fit into a stepped screening approach?

Accepted Answer

The PHQ-2 is ideally used in a two-stage model: all patients complete the PHQ-2, and those scoring 3 or higher then complete the full PHQ-9. A meta-analysis (Levis et al., 2020) confirmed this sequential approach maintains excellent combined sensitivity and specificity while reducing screening burden in busy primary care settings.

Question 5

What does my PHQ-2 score mean?

Accepted Answer

We have a detailed scoring guide that explains how to interpret your PHQ-2 results, including severity ranges and recommended clinical actions. Read our full scoring guide.

PHQ-2: Ultra-Brief Depression Screening

Take the PHQ-2 assessment. Ultra-brief 2-item depression screening for rapid identification of individuals needing further evaluation. Evidence-based first-step screen.

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