But, they were unable to eliminate potential confounding from the use of antibiotics for wheeze-related respiratory illnesses that precede asthma.

• 但在发生哮喘前其他呼吸系统疾病造成呼吸困难而使用抗生素可对研究结果产生干扰，而流行病学研究的研究者们并不能排除这种干扰。