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Table 1 Subject characteristics

From: Identification of acid reflux cough using serial assays of exhaled breath condensate pH

Subgroup Age (years) Sex EBC pH Median (25–75% range)
Pharyngeal Acid Challenge (n = 15) 28.8 ± 10 10 F
5 M
8.0 (7.9–8.0) (n = 15 samples from before challenge)
Normal Subjects (n = 22) 35.17 13 F
9 M
8.1 (8.0–8.2) (n = 174 samples)
Chronic Cough Subjects (n = 22) 28 ± 23 7 F
15 M
7.9 (7.6–8.0) (n = 166 samples)