. 2013 Apr 19;12:35. doi: 10.1186/1476-069X-12-35

Table 1.

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

Variable	Result
Girl, n (%)	223 (48.5)
Birth weight, mean (SD) g	3724 (505)
Birth weight ≤ 2500 g, n (%)	3 (0.7)
Age at 5-year examnination, mean (SD) years	5.0 (0.1)
Age at 7-year examination, mean (SD) years	7.5 (0.1)
Serum-PFOS concentration at age 5, ng/mL^a	17.3 (14.1; 21.3)
Serum-PFOA concentration at age 5, ng/mL^a	4.06 (3.33; 4.95)
Anti-tetanus concentration at age 7, IU/mL^a	1.80 (0.75; 4.60)
Anti-diphtheria concentration at age 7, IU/mL^a	0.80 (0.40; 1.60)

^a Median (interquartile range).