What are the limitations of the PHQ 2 (Depression Screen)?

While the PHQ 2 (Depression Screen) is highly validated, it should not replace clinical judgment. OpiCalc provides the latest evidence-based limitations for the PHQ 2 (Depression Screen) to ensure safe bedside use and optimal diagnostic accuracy.

How does the PHQ 2 (Depression Screen) compare to other Psychiatry scores?

The PHQ 2 (Depression Screen) is a gold-standard diagnostic tool. OpiCalc provides side-by-side clinical guidance to help clinicians choose the most specific evidence-based tool for their patient's presentation.

Is the PHQ 2 (Depression Screen) free to use?

Yes. OpiCalc provides the PHQ 2 (Depression Screen) completely ad-free and optimized for mobile bedside use, ensuring you can calculate medical risk swiftly and without distraction.

EVIDENCE SYNTHESIS

Clinical Reference Hub

Curated insights • How it Works • Practical Pearls • Evidence Base

CLINICAL INSIGHT

When to Use

Primary care first-step screening for major depressive disorder (MDD)
Annual depression screen in all adults per USPSTF Grade B recommendation
Pre-screening before full PHQ-9 to reduce clinician burden
Screening in obstetric, oncology, cardiology, and geriatric settings where depression prevalence is elevated

Do Not Use Alone For

Confirming a diagnosis of MDD — PHQ-2 positive requires full PHQ-9
Severity assessment or monitoring treatment response
Screening for dysthymia, bipolar disorder, or anxiety disorders

CLINICAL INSIGHT

How it Works

Scoring

Items

Item 1: Little interest or pleasure in doing things (anhedonia)
Item 2: Feeling down, depressed, or hopeless (dysphoria)

CLINICAL INSIGHT

Practical Pearls

Performance Characteristics

Threshold	Sensitivity	Specificity
≥ 2	~83%	~78%
≥ 3 (recommended)	~79%	~86%

Gotchas

A score of 0 does NOT rule out depression in high-risk groups (e.g., masked depression in older adults)
PHQ-2 does not assess suicidal ideation — always ask directly if clinical concern exists
PHQ-2 items are also the first 2 items of PHQ-9; a positive PHQ-2 seamlessly transitions to PHQ-9 completion

CLINICAL INSIGHT

Next Steps

Action by Score

Score	Action
0–2	Negative screen. Rescreen annually or with clinical change.
3–6	Positive screen. Complete full PHQ-9 in same encounter.

CLINICAL INSIGHT

Clinical Reference Hub

When to Use

When to Use

Do Not Use Alone For

How it Works

Scoring

Items

Practical Pearls

Performance Characteristics

Gotchas

Next Steps

Action by Score

Background

Development

PHQ-2 (Depression Screen)

Clinical Reference Hub

When to Use

When to Use

Do Not Use Alone For

How it Works

Scoring

Items

Practical Pearls

Performance Characteristics

Gotchas

Next Steps

Action by Score

Background

Development

PHQ-2 (Depression Screen)

Clinical Evidence and Methodology

Clinical Reference Hub

When to Use

When to Use

Do Not Use Alone For

How it Works

Scoring

Items

Practical Pearls

Performance Characteristics

Gotchas

Next Steps

Action by Score

Background

Development

PHQ-2 (Depression Screen)

Clinical Evidence and Methodology

Clinical Reference Hub

When to Use

When to Use

Do Not Use Alone For

How it Works

Scoring

Items

Practical Pearls

Performance Characteristics

Gotchas

Next Steps

Action by Score

Background

Development

PHQ-2 (Depression Screen)