To investigate whether the use of feedback information provided by viewing flow volume (F/V) curves during spirometry performed by practice assistants improves spirometry test quality. Higher PEF ...

If you have an old spirometer, with no option to read or upload flow-volume or volume-time curves, please ditch it. Without seeing the graphical traces, you cannot accurately detect spurious or ...

To assess the role of risk factors for chronic obstructive lung disease (COPD) by multiple logistic models, the data of the first cross-sectional epidemiological survey in the unpolluted rural area of ...