Table 3 Clinical classification of severity in GATPC
Characteristic | Intermittent (Grade I) | Mild (Grade II) | Moderate (Grade III) | Severe (Grade IV) |
|---|---|---|---|---|
symptoms | Less than once week | More than once week, < once a day | Everyday | Everyday |
Limitation of activities and sleep | Transient | May be affect activities and sleep | Affect activities and sleep | Frequent |
Nocturnal of symptoms/awakening | Less than twice a month | More than twice a month, < once a week | More than once week | Frequent |
Lung function(PEF or FEV1) | ≥80% predicted (FEV1)or personal best (PEF); mutation rate < 20% | ≥80% predicted (FEV1)or personal best (PEF); mutation rate 20%~30% | 60%~79% predicted (FEV1)or personal best (PEF); mutation rate > 30% | < 60% predicted (FEV1)or personal best (PEF); mutation rate > 30% |