Classification of asthma control according to Global Initiative for Asthma 2006
| Controlled | Partly controlled | Uncontrolled | |
| (all of the below) | (any of the below) | (at least 3 of the below) | |
| During the last 4 weeks: | |||
| Asthma symptoms during the day | Twice or less per week | Three times or more per week | Three times or more per week |
| Limitation of daily activities | No | Yes | Yes |
| Asthma symptoms during the night | No | Yes | Yes |
| Reliever medication | Used twice or less per week | Used three times or more per week | Used three times or more per week |
| Lung function | FEV1 >80% predicted | FEV1 <80% predicted | FEV1 <80% predicted |
| During the last 12 months: | |||
| Exacerbations# | No | At least one | At least one |
#: any of the following events in the last 12 months due to asthma: oral corticosteroids and/or antibiotics, emergency healthcare visit with or without hospitalisation, or not being able to work or perform daily activities due to asthma during at least 2 days. FEV1: forced expiratory volume in 1 s. Reproduced from [29] with permission.