TABLE 3.
Spirometry and control of asthma in 500 patients
| Characteristics | Yes FEV1% (mean ± SD) | No FEV1% (mean ± SD) | P |
|---|---|---|---|
| Waking at night with asthma in the past week | 80±20.4 | 81±20.6 | 0.8 |
| Using beta2-agonists more than once per day | 77±21.4 | 83±19.5 | 0.004 |
| Had emergency treatment in the past year | 79±19.1 | 82±21.7 | 0.09 |
| Missed days from school or work in the past three months | 80±19.7 | 82±20.9 | 0.4 |
| Any of the above (asthma not controlled) | 80±20.0 | 83±22.0 | 0.2 |
FEV1% Forced expiratory volume in 1 s expressed as a percentage of predicted