Clinical and demographic data on children with PCD who underwent an annual review in 2015 across the four English National Children PCD Management Services
| Mean (SD) | n with available data | |
| Median age in years (IQR) | 9.8 (5.5 to 13.8) | 333 |
| Male (%) | 175 (52.6%) | 333 |
| FEV1 z-score | −1.9 (1.4) | 240 |
| FEV1 % predicted | 76.8% | 240 |
| FVC z-score | −1.3 (1.5) | 240 |
| FVC % predicted | 85.4% | 240 |
| BMI z-score | 0 (1.4) | 307 |
| Weight z-score | −0.1 (1.3) | 159* |
| Height z-score | −0.3 (1.1) | 310 |
| Age at diagnosis | 2.6 (0.5 to 7.2)† | 321 |
*WHO Weight-for-age reference data are not available beyond age 10 hence n lower than for other anthropometric data.27
†Median (IQR).
BMI, body mass index; FEV1, forced expiratory volume in one second; FVC, forced vital capacity; PCD, primary ciliary dyskinesia.