Descriptive statistics of changes of PFT parameters from baseline to 2 years for single ACS and multiple episodes of ACS.

Descriptive statistics of changes of PFT parameters from baseline to 2 years for single ACS and multiple episodes of ACS.针对单次急性冠脉综合征（Acute Coronary Syndrome，ACS）与多次ACS发作病例，其肺功能测试（Pulmonary Function Test，PFT）参数自基线至2年的变化情况的描述性统计。