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. Author manuscript; available in PMC: 2015 Jan 31.
Published in final edited form as: J Immunol Methods. 2013 Dec 2;403(0):17–25. doi: 10.1016/j.jim.2013.11.013

Table 1. Correlations between sputum assays and lung function tests.

N=15 for all comparisons. Graphs of the data are shown in supplemental Figure S1.

Sputum
Assay		 Bronchodilator
Response		 Exercise-Induced Bronchoconstriction
Max FEV1 % AUC30
R p value R p value R p value
EOS 0.61 0.02 0.09 0.54 0.009 0.84
ICAM 0.67 0.006 0.69 0.005 0.62 0.01
PDGF 0.57 0.02 0.69 0.005 0.65 0.008
RANTES 0.64 0.01 0.66 0.007 0.61 0.02

Abbreviations: Bronchodilator Response, change in FEV1 after administration of a short-acting β2-agonist; AUC30, area under the FEV1 curve over the first 30 min after exercise (% change*min); Max FEV1 %, maximal fall in FEV1 after exercise challenge relative to baseline; EOS, sputum eosinophil counts; ICAM, halogenated intracellular adhesion molecule 1; halogenated PDGF, platelet-derived growth factor.