Spirometric parameter H. pylori seropositive non-COPD patients (n=15) H. pylori seronegative non-COPD patients (n=25) P-value FEV1 (%pred) 95.0 ± 8.2 93.0 ± 9.5 >0.05 FVC (%pred) 84.0 ± 3.4 83.0 ± 6.1 >0.05 FEV1/FVC 1.13 ± 0.03 1.12 ± 0.02 >0.05

Table 4: Mean baseline values of spirometric parameters in H. pylori seropositive and seronegative non-COPD study subjects.