Table 1

Occurrence of study subjects according to the ongoing proton pump inhibitor (PPI) treatment at the time of sputum induction and distribution of patients treated with PPI at the time of sputum induction and their response to PPI

PPI response (after 4 weeks treatment)
Number of patientsPositiveNegativeTotal
PPI at the time of sputum induction (>2 weeks):
Yes9312
No151227
Total2415