Why M3 works

The M3 Checklist — one page, four conditions

The M3 Checklist is a 27-item, self-rated screening tool that assesses depression, bipolar spectrum, anxiety, and post-traumatic stress disorders together, in a single one-page instrument. Most published depression screens (like the PHQ-9) capture only one of these four — which means much of diagnosable mental illness can go undetected when only depression is screened for.

• Gateway-driven scoring. Four functional-impairment questions come first; deeper symptom scoring runs only for those who flag impairment — efficient without losing accuracy.
• Practical in real clinics. Patients finished it in under 5 minutes in the waiting room; 83% of clinicians reviewed it in 30 seconds or less, and 80% found it helpful for understanding emotional health.
• Catches bipolar disorder. About 10% of patients screened had bipolar disorder — missing it and starting an antidepressant alone can destabilize a patient. The M3 screens for it explicitly.
• Catches PTSD and anxiety too. Coexisting anxiety makes depression more treatment-resistant; the M3 covers all four common categories on one page.

The instrument: five questions, and a word at every number

Chronic pain and mental health travel together — an NIH-supported study published in the journal PAIN found that adults living with chronic pain are about five times more likely to report symptoms of anxiety or depression. Each feeds the other: pain disturbs sleep and mood; anxiety and low mood amplify pain. That is why the M3 review measures pain on the same dated record as mood, anxiety, trauma, and bipolar symptoms — and returns it as its own score, separate from the mental health score.

The Defense and Veterans Pain Rating Scale (DVPRS) was developed by the Defense & Veterans Center for Integrative Pain Management at the Uniformed Services University of the Health Sciences. Its psychometrics were published by Polomano and colleagues in Pain Medicine in 2016, in 307 service members and veterans: the five items hold together well (Cronbach’s α 0.871), and the five items gave consistent answers when asked again (test–retest r = 0.637 to 0.774). 70.9% of the participants rated it better than other pain scales they had used. You answer it yourself. The questions, word for word:

What each number means (question 1)

You are not choosing a bare “6”; you are choosing hard to ignore, avoid usual activities. The colour is the zone that number sits in.

Scoring. The pain score is question 1 alone, from 0 to 10. It is the one number followed from one review to the next — your pain line over time. The four past-24-hour questions are shown individually beside it and are never added up or averaged: the 2016 study found they fall into two groups (intensity, activity and sleep together; mood and stress together) — a two-factor solution explained 79% of the variance, against 66% for a single factor — and it validates no combined score. Averaging four items across two real factors would give a tidier number and a worse one.

Bands. green 0–4 mild (0 is no pain) · 5–6 moderate (yellow) · 7–10 severe (red) — the DVPRS’s own colour zones. The 2016 study derives no cut-points of its own; the bands it quotes are Serlin and colleagues’ 1995 bands, and they are the same boundaries.

Change. What matters is the direction from one review to the next. No minimal important difference has been published for the DVPRS, so the report shows how your pain moved without calling a change “meaningful” — nobody has published where that line is. And because the four past-24-hour answers are kept separately, a report can show sleep or mood getting better even while the pain number holds steady.

Licence. The DVPRS is free to use “as is, without alteration,” and as a US federal government work it is effectively public domain. It is used here unaltered, with one substitution: the printed form says circle the one number, and on screen you choose the number instead.