Table 1 Characteristics of 431 Faroese birth cohort members with complete data from examinations at ages 5 and 7 years

Girl, n (%)

Birth weight, mean (SD) g

Birth weight ≤ 2500 g, n (%)

Age at 5-year examnination, mean (SD) years

Age at 7-year examination, mean (SD) years

Serum-PFOS concentration at age 5, ng/mL^a

Serum-PFOA concentration at age 5, ng/mL^a

Anti-tetanus concentration at age 7, IU/mL^a

Anti-diphtheria concentration at age 7, IU/mL^a