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Table 6 Comparison of retention Z-scores and PI between children (5–14 years) and adults (>14 years)

From: Clinical value of measurement of pulmonary radioaerosol mucociliary clearance in the work up of primary ciliary dyskinesia

  Mean values for children Mean values for adults Difference of the means (95 % CI) p value
n = 42 n = 44
Z-score for LR1 −1.4 0.089 1.47 (1.05; 1.89) p < 0.001
Z-score for LR2 −1.7 −0.0023 1.65 (1.15; 2.15) p < 0.001
PI 0.40 0.61 0.2 (0.127; 0.276) p < 0.001
  1. All the included patients had a perfectly normal PRMC test. (This is defined as a normal PRMC test showing no signs of regional impaired clearance or slow clearance in any part of the lung in combination with no coughing or throat clearing during the 2-h PRMC test)