| |
Mild Intermittent |
Mild Persistent |
Moderate Persistent |
Severe Persistent |
| Symptoms |
<2/week |
>2/week |
Daily |
Continual |
| Night symptoms |
<2/month |
>2/month |
>1/week |
Frequent |
| FEV1 |
>80% predicted |
>80% predicted |
60-80% |
<60% |
| Peak flow variability |
<20% |
20-30% |
>30% |
>30% |
|
