Change from baseline in forced expiratory volume on one second(% pred) over 7 months and by treatment group in all patients#
| Baseline | 1 month¶ | 3 months¶ | 6 months¶ | 7 months¶ | |
| Daily+ | 56.4±19.6 | 2.8±0.7* | 3.5±0.8* | 3.1±0.8* | 1.2±1.0 |
| Weekly§ | 57.0±20.6 | 2.4±0.8* | 2.3±0.7* | 2.4±1.0* | 1.2±1.2 |
| Mean differenceƒ | 0.6 | −0.4 | −1.2 | −0.7 | 0.0 |
| 95% CI | −5.0–6.1 | −1.7–2.4 | −0.9–3.3 | −1.7–3.2 | −3.0–3.0 |
| p-value## | 0.74 | 0.27 | 0.58 | 1.00 |
Data are presented as mean±sd, unless otherwise stated. CI: confidence interval. #: n = 208; ¶: change compared with baseline; +: n = 103; §: n = 105; ƒ: mean difference between groups (daily versus weekly); ##: p-values relate to mean difference between groups (daily versus weekly); *: significant difference (p<0.05) from baseline.