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| 1999 | 2000 | 2001 | Change 1999–2000 (where both available) | p Value changes, | |||||
|---|---|---|---|---|---|---|---|---|---|
| I | C | I | C | I | C | I | C | I v C | |
| Number (adults/children) | 20/36 | 25/45 | 18/28 | 20/28 | 6/15 | 13/24 | 14/25 | 13/27 | |
| Adults | 1.5 | 1.3 | 1.3 | 1.4 | 2.0 | 1.9 | –0.1 | –0.2 | 0.72 |
| Children | 0.8 | 1.1 | 0.6 | 1.2 | 0.8 | 0.9 | –0.2 | –0.1 | 0.59 |
BTS, British Thoracic Society; C, control; I, intervention.
