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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)