Table 3.
Characteristics of questionnaires for assessing asthma control.
| Age (years) | Recall period | Number of items | Range | Cut-off point for uncontrolled asthma | |
|---|---|---|---|---|---|
| ACT | ≥12 | 4 weeks | 5 | 5-25 | ≤19 |
| C-ACT | 4–11 | 4 weeks | 7 | 0-27 | ≤19 |
| ACQ | >6a | 1 week | 7b |
0 = well controlled 6 = extremely poorly controlled |
1.5 |
| APGAR | 5–18 | 2 weeks | 6 | A + P ≥ 2 | |
| NAEPP | 0–18 | 2–4 weeks | 4 |
well controlled not well controlled very poorly controlled |
NA |
| RCP3Q | 8 | 1 month | 3 | 0–3 | ≥1 |
| VAS | 3 monthsc | 1 |
0–100 0 = no symptoms 100 = very bad symptoms |
ACT Asthma Control Test, C-ACT Childhood Asthma Control Test, ACQ Asthma Control Questionnaire, APGAR Activities Persistent triGGers Asthma medications Response to therapy, NAEPP The National Asthma, Education and Prevention Program, RCP3Q Royal College of Physicians’ ‘three questions’, VAS Visual Analog Scale.
aACQ: in children aged 6–10 years, it must be administered by a trained interviewer.
bShortened versions of the ACQ exist.
cIn the trial of Halterman et al.