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Table 4 The apical drug density per unit lung volume as a percentage of the drug density per unit lung volume in the remaining lung; for the three participant groups in sitting and side lying with the mean difference (%) and 95% confidence interval between the two positioning strategies

From: Side lying during nebulisation can significantly improve apical deposition in healthy adults and adults with mild cystic fibrosis lung disease: a randomised crossover trial

% Healthy Mild CF Advanced CF
Sitting 36 ± 11 43 ± 8 41 ± 20
Side lying 49 ± 14 47 ± 7 45 ± 21
Mean Difference
95% CI
13
(7 to 19)
4
(1 to 7)
4
(−2 to 9)