Table 1.
General characteristics of 36 asthma patients.
| Characteristic | Mean | % or 95% CI |
|---|---|---|
| Sex, male | 15 | 42 |
| Age, years | 4.3 | 4.0–4.6 |
| Height, m | 1.08 | 1.05–1.10 |
| BMI, kg/m2 | 15.7 | 15.1–16.3 |
| Baseline SpO2, % | 99 | 98.8–99.5 |
| Respiratory rate, breaths/min | 15 | 14.2–15.3 |
| Test interval, days | 9.7 | 7.4–12.1 |
| Asthma duration, months | 20.0 | 15.4–24.5 |
| Asthma medication | ||
| Step 1 | 4 | 11.1 |
| Step 2 | 17 | 47.2 |
| Step 3 | 8 | 22.2 |
| Step 4 | 7 | 19.4 |
CI, confidence interval; BMI, body mass index; asthma medication step indicates the medication used prior to first IOS measurements, according to the 2007 Expert Panel Report 3.