Table 1.
Descriptive information about sample
| Asthma | Healthy | |||||
|---|---|---|---|---|---|---|
| % | M | SD | % | M | SD | |
| Age (range 10-20 yearsa) | 15.0 | 2.8 | 15.9 | 2.0 | ||
| Gender (% male) | 68 | 57 | ||||
| Ethnicity | ||||||
| Caucasian | 58 | |||||
| Asian | 26 | 17 | ||||
| Other | 16 | 9 | ||||
| Severity | ||||||
| Mild intermittent | 13 | |||||
| Mild persistent | 45 | |||||
| Moderate persistent | 29 | |||||
| Severe | 13 | |||||
| Atopic | 55 | 13 | ||||
| FEV1/FVC | .76 | .12 | .84 | .08 | ||
| ICSa | 6.0 | 6.3 | 0 | 0 | ||
| ICS dose | ||||||
| Low | 73 | |||||
| Medium | 27 | |||||
| High | 0 | |||||
| Beta agonistsb | 5.1 | 6.2 | 0 | 0 | ||
| Baseline FEV1% | 90.6 | 16.6 | 99.0 | 8.4 | ||
| Post-task FEV1% | 90.0 | 14.1 | 97.0 | 9.1 | ||
| Baseline FeNO (ppb) | 58.5 | 57.5 | 22.8 | 24.4 | ||
| Post-task FeNO (ppb) | 53.5 | 51.5 | 21.4 | 23.5 | ||
ICS=inhaled corticosteroids. FEV1%= forced expiratory volume in 1 second percent predicted. FeNO= fractional concentration of exhaled nitric oxide in parts per billion. FEV1/FVC=ratio of FEV1 to forced vital capacity.
a
age range for asthma group: 10-20 years; age range for healthy group: 11-18 years.
b
=number of days taken in previous 2 weeks, range for both medications in the asthma group was from 0 to 14 days.