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Table 3 % Change in Mean logC2 from baseline measured at 1,2,4 hrs and 2 wks following citric acid inhalation challenge with the KoKo DigiDoser versus the Mefar Dosimeter.

From: Validation of the ERS standard citric acid cough challenge in healthy adult volunteers

Time point KoKo DigiDoser (n = 39) Pearson Correlation Mefar Dosimeter (n = 39) Pearson Correlation
  %Δ Mean C2 log mM
(95%CI)
  %ΔMean C2 log mM
(95%CI)
 
1 hr -1.57 (-5.01-1.86) 0.76 -9.79 (-0.28 - -0.08) 0.74
2 hr -3.14 (-7.50-1.23) 0.67 -10.70 (-18.0 - -3.41) 0.63
4 hr -2.08 (-6.12-1.96) 0.75 -11.69 (-19.09 - -4.30) 0.60
2 wk 1.36 (-3.04-5.75) 0.67 -8.24 (-15.71 - -0.78) 0.56