🫁 Asthma Control Test (ACT)
UseSelf-rated asthma control over the past 4 weeks; 5 items scored 1–5 (total 5–25).
StrataACT quantifies asthma control over the past 4 weeks (5–25); bands follow Nathan 2004. Treatment changes follo…
LimitsNot a diagnosis or disposition decision on its own. · Interpret with history, examination and other tests. · For licensed clinicians; does not replace clinical judgement.
SourceNathan RA, et al. J Allergy Clin Immunol 2004;113:59–65
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
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Methodology · worked example, guidelines & full notes
ACT = Σ 5 items (1–5 each) = 5–25
When to use
Self-rated asthma control over the past 4 weeks; 5 items scored 1–5 (total 5–25).
How it works
ACT = Σ 5 items (1–5 each) = 5–25
Key points
- ACT = Σ 5 items (1–5 each) = 5–25
- ≥20 well controlled; 16–19 not well controlled; ≤15 poorly controlled.
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. Time asthma kept you from getting things done | Some (3) |
|---|---|
| 2. Shortness of breath | 3–6×/week (3) |
| 3. Night-time/early waking symptoms | Once a week (3) |
| 4. Use of rescue inhaler | 2–3×/week (3) |
| 5. Self-rated control | Somewhat (3) |
→ACT15/25 · Poorly controlled
- Bands：≥20 well controlled; 16–19 not well controlled; ≤15 poorly controlled.
- Source：Nathan 2004 (PMID 14713908)
| 1. Time asthma kept you from getting things done | All the time (1) |
|---|---|
| 2. Shortness of breath | > 1×/day (1) |
| 3. Night-time/early waking symptoms | ≥ 4 nights/week (1) |
| 4. Use of rescue inhaler | ≥ 3×/day (1) |
| 5. Self-rated control | Not controlled (1) |
→ACT5/25 · Poorly controlled
- Bands：≥20 well controlled; 16–19 not well controlled; ≤15 poorly controlled.
- Source：Nathan 2004 (PMID 14713908)
Verification & sources · governance
FAQ
Frequently asked questions
- Does Asthma Control Test (ACT) 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.