Pseudomonas aeruginosa incidence rates, study activity and age according to recruiting centre
| Centre | Recruits | Age years median (IQR) | Study activity | P. aeruginosa incidence cases per patient-year (95% CI) | |
| Total visits | Visits per patient year median (IQR) | ||||
| 1 | 24 | 7.6 (4.0–8.0) | 188 | 5.7 (5.3–6.3) | 0.22 (0.10–0.40) |
| 2 | 34 | 8.8 (6.0–12.0) | 348 | 4.9 (4.3–5.2) | 0.18 (0.10–0.29) |
| 3 | 21 | 6.9 (4.9–13.2) | 193 | 4.2 (3.5–4.5) | 0.27 (0.15–0.43) |
| 4 | 53 | 9.1 (5.4–12.5) | 229 | 2.4 (1.9–2.8) | 0.20 (0.12–0.29) |
| 5 | 30 | 9.4 (6.7–12.9) | 306 | 5.2 (4.5–5.5) | 0.13 (0.07–0.25) |
| 6 | 18 | 8.0 (2.4–10.7) | 136 | 4.5 (3.7–5.3) | 0.28 (0.14–0.49) |
| 7 | 36 | 5.2 (3.3–8.5) | 477 | 5.9 (5.2–6.7) | 0.08 (0.04–0.18) |
| 8 | 17 | 8.4 (5.2–12.0) | 209 | 5.5 (4.9–6.2) | 0.22 (0.10–0.40) |
| Total | 233 | 8.0 (5.0–12.2) | 2086 | 4.8 (3.1–5.6) | 0.17 (0.14–0.22) |
Data are presented as n unless otherwise stated. Children in the Free From But Treated group were excluded when the P. aeruginosa incidence and antibiotic courses were calculated. IQR: interquartile range.