The OR between indoor dust mite allergen (Der p1) and the morning PEFR less than 80% of study children was 2.54 in a multivariate logistic regression.

• 故本篇研究将藉由气喘儿童最大呼气量及相关呼吸道症状之纪录与居家环境中通风换气效率及室内环境采样等资料，进一步探讨通风换气效率与诱发呼吸道症状表现之间的相关性。