This study was undertaken to assess the value of microspirometry in detecting reduced FEV1 values in cigarette smokers, i.e., subjects at high risk for COPD.

• 本研究的目的是评估微型肺量计在检测吸烟者（即慢性阻性肺疾病（COPD）高危人群）下降的FEV1值中的作用。