Stratifying the participants based on sex, age, smoking status, presence or absence of diabetes mellitus, or C pneumoniae serologic status at baseline did not affect these results.

• 将患者依性别、年龄、抽菸状况、糖尿病、肺炎披衣菌血液检查结果等参数在基线时即作分类；结果显示，这些参数并未造成影响。