美國匹茲保大學研究

一個月大幼兒使用合成纖維寢具引發提早氣喘發病年齡

一個月大幼兒使用合成纖維寢具產生的氣喘徵狀。
Log-rank存活分析為 P=0.03。
實線代表合成纖維枕頭及被子；
虛線代表非合成纖維枕頭及被子；
粗點線代表合成纖維枕頭；
輕點線代表合成纖維被子。

發病年齡分析顯示，在患有氣喘病的兒童之中，在嬰兒期的合成纖維寢具的使用關連著氣喘症狀的提早出現。
發病年齡次群分析顯示，在患有氣喘病的兒童之中，特別是被標註患有頻繁氣喘病的孩童,在嬰兒期使用合成纖維寢具其氣喘症狀會提早出現。

Age of onset of asthma or wheezy breathing by synthetic bedding use at one month of age

Age of onset of asthma or wheezy breathing by synthetic bedding use at 1 month of age. Log-rank test for equality of survivor function, P=0.03. Solid line indicates synthetic pillow and quilt; dotted line indicates no synthetic pillow or quilt; heavy broken line indicates synthetic pillow, not quilt; light broken line indicates synthetic quilt, not pillow.


Age of onset analysis showed that, among children with asthma, synthetic bedding use in infancy was associated with an earlier onset of asthma symptoms. In subgroup analysis, this age-of-onset shift was particularly marked for children with frequent wheeze.

http://www.pitt.edu/~super1/lecture/lec9581/018.htm