Mean (SD) baseline demographic data of the two treatment groups
| Variables | BTS (n=89) | US (n=81) |
|---|---|---|
| *As assessed by BTS guidelines.2 | ||
| Age (years) | 34 (12) | 34 (12) |
| Female (%) | 53 | 59 |
| PEF (l/min) | 215 (72) | 206 (87) |
| PEF (% best) | 47 (13) | 45 (16) |
| Median BTS treatment step (1–5)* | 2 | 2 |
| Smoking history (pack years) | 7 | 8 |
| Oral steroid courses in last year for asthma | 1.3 | 1.8 |
| Admissions in last year | 0.4 | 0.5 |
| PEF at follow up | 424 (16) | 420 (16) |