Table 1 Comparison of participation rates, ages and asthma outcomes between centres.
From: A methodology to establish a database to study gene environment interactions for childhood asthma
Centre | Number of children | Mean age (years) | Median SIMD decile | Mean % FEV1 | Median FENO(SEM), ppb | Median BTS treatment step | |||
|---|---|---|---|---|---|---|---|---|---|
| Â | Invited | Participated | Participants | Non participants | Participants | Non participants | Â | Â | Â |
Aberdeen | 167 | 93 | 8.8 (4.1) | 9.1 (4.3) | 7 | 7 | 96 (17) | 27 (6) | 3 |
| Â | Â | Â | Â | Â | Â | Â | n = 41 | n = 41 | Â |
Dundee | 220 | 91 | 8.1 (4.2) | 9.0 (4.4) | 6 | 5 | 100 (17) | 25 (6) | 3 |
| Â | Â | Â | Â | Â | Â | Â | n = 45 | n = 44 | Â |
Edinburgh | 271 | 140 | 8.5 (4.1) | 9.8 (4.3) | 7 | 5 | 91 (11) | 16 (4) | 3 |
| Â | Â | Â | Â | Â | Â | Â | n = 38 | n = 54 | Â |
Elgin | 70 | 29 | 8.9 (4.1) | 9.8 (4.3) | 6.5 | 5 | 103 (12) | 17 (6) | 3 |
| Â | Â | Â | Â | Â | Â | Â | n = 12 | n = 9 | Â |
Kirkcaldy | 80 | 42 | 6.8 (3.3) | 8.5 (3.6) | 5 | 4 | 93 (14) | 11 (18) | 3 |
| Â | Â | Â | Â | Â | Â | Â | n = 9 | n = 8 | Â |
Melrose | 24 | 17 | 11.1 (3.0) | 10.5 (3.8) | 7 | 5 | 93 (9) | 14 (7) | 3 |
| Â | Â | Â | Â | Â | Â | Â | n = 13 | n = 15 | Â |
Perth | 119 | 45 | 10.0 (3.4) | 9.8 (3.7) | 6 | 7 | 104 (12) | 41 (10) | 3 |
| Â | Â | Â | Â | Â | Â | Â | n = 14 | n = 14 | Â |
Other | 94 | 64 | 9.0 (4.3) | 8.3 (4.3) | 4 | 4 | none | None | 2.5 |
Overall | 1045 | 501 | 8.6 (3.9) | 9.2 (4.0)* | 6 †| 6 | 97 (15)†| 18 (2) | 3 (2, 3)†|