Table 6.

ORs (95% CIs) and p-values describing the effect of a doubling exposure concentration on the risk of an antibody concentration below a clinically protective level of 0.1 IU/mL in Faroese birth cohort members examined at ages 5 and 7 years (n = 587).

	Antidiphtheria toxoid				Antitetanus toxoid
	5 years		7 years		5 years		7 years
PCB exposure	OR (95% CI)	p-Value	OR (95% CI)	p-Value	OR (95% CI)	p-Value	OR (95% CI)	p-Value
Pregnancy	1.15 (0.91–1.45)	0.24	0.97 (0.62–1.52)	0.89	1.19 (0.93–1.53)	0.17	0.93 (0.53–1.62)	0.79
Milk	1.34 (1.11–1.61)	0.002	1.03 (0.71–1.50)	0.88	1.11 (0.91–1.36)	0.30	1.06 (0.63–1.79)	0.82
18 monthsa	1.30 (1.08–1.57)	0.006	1.58 (0.88–2.83)	0.12	1.15 (0.92–1.44)	0.22	1.64 (0.96–2.81)	0.07
5 years	1.19 (1.01–1.39)	0.03	1.09 (0.77–1.53)	0.64	1.09 (0.92–1.29)	0.33	1.12 (0.72–1.75)	0.61
7 years	—	—	1.01 (0.74–1.39)	0.93	—	—	1.12 (0.71–1.75)	0.63

Results are from logistic regression model with adjustment for age and sex; results at 7 years were also adjusted for booster status.

^aBased on multiple imputation data.