🫁 COPD Assessment Test (CAT)
UseSymptom assessment and monitoring in COPD.
SourceJones PW, et al. Eur Respir J 2009
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
Paste the link in Slack, Teams, X, or LinkedIn — the preview image comes from this page’s Open Graph card.
Methodology · worked example, guidelines & full notes
CAT ≥ 10 indicates more symptoms in GOLD ABE.
When to use
Symptom assessment and monitoring in COPD.
How it works
Eight items scored 0–5; total 0–40. < 10 low, 10–20 medium, 21–30 high, > 30 very high impact.
Key points
- CAT ≥ 10 indicates more symptoms in GOLD ABE.
- A change of ≥ 2 points is meaningful.
- Complements the mMRC scale.
References
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| 1. Cough | 2 |
|---|---|
| 2. Phlegm | 2 |
| 3. Chest tightness | 2 |
| 4. Breathlessness on hills/stairs | 2 |
| 5. Activity limitation at home | 2 |
| 6. Confidence leaving home | 2 |
| 7. Sleep | 2 |
| 8. Energy | 2 |
→CAT16/40
- Impact：Medium impact
- GOLD：CAT ≥ 10 indicates more symptoms in the GOLD ABE assessment.
| 1. Cough | 0 |
|---|---|
| 2. Phlegm | 0 |
| 3. Chest tightness | 0 |
| 4. Breathlessness on hills/stairs | 0 |
| 5. Activity limitation at home | 0 |
| 6. Confidence leaving home | 0 |
| 7. Sleep | 0 |
| 8. Energy | 0 |
→CAT0/40
- Impact：Low impact
- GOLD：CAT ≥ 10 indicates more symptoms in the GOLD ABE assessment.
Verification & sources · governance
FAQ
Frequently asked questions
- What are the limits and cautions when using COPD Assessment Test (CAT)?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- Does COPD Assessment Test (CAT) upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is COPD Assessment Test (CAT) calculated in practice? Can you show a worked example?
- Inputs: 1. Cough 2, 2. Phlegm 2, 3. Chest tightness 2, 4. Breathlessness on hills/stairs 2, 5. Activity limitation at home 2, 6. Confidence leaving home 2, 7. Sleep 2, 8. Energy 2 → Result: CAT 16 /40（Impact: Medium impact, GOLD: CAT ≥ 10 indicates more symptoms in the GOLD ABE assessment.） Inputs: 1. Cough 0, 2. Phlegm 0, 3. Chest tightness 0, 4. Breathlessness on hills/stairs 0, 5. Activity limitation at home 0, 6. Confidence leaving home 0, 7. Sleep 0, 8. Energy 0 → Result: CAT 0 /40（Impact: Low impact, GOLD: CAT ≥ 10 indicates more symptoms in the GOLD ABE assessment.）