Statistical analysis
Data are presented as means and standard deviations or numbers and
percentages. Data were analyzed using IBM SPSS Statistics ver. 23.0 (IBM
Co., Armonk, NY, USA). Comparisons between the PFAS and non-PFAS groups
were calculated using the Pearson chi-square test or independentt -test as appropriate. Unadjusted and multivariable-adjusted
logistic regression models examined associations between PFAS and
allergic disease in early childhood. Candidate variables for adjustment
included sex, delivery mode, gestational age, parental history of
allergic diseases, maternal education level, exclusive breastfeeding
during the first 6 months of life, and antibiotic treatment during the
first 1 year of life were used to calculate the odds ratio and 95%
confidence interval. A P-value of <0.05 was considered
statistically significant.