The A value of specific immunoglobulin G antibody and age: Those were close between the abnormal group and the normal group (P > 0.05).

• 特异性IgG抗体检测A值及年龄:肺一氧化碳弥散能力异常组与肺一氧化碳弥散能力正常组相近(P>0.；05)。