Table 5.

Logistic regression analyses of iodine status with infant allergy diagnosis at 12 months of age.

Biomarker or intake per 10 μg	n	Food allergy OR (95% CI)	p	n	Atopic eczema OR (95% CI)	p	n	Asthma OR (95% CI)	p
UNADJUSTED
Dietary intake, μg/d (GW34)	381/3702	0.94 (0.88–1.01)	0.11	32/370	1.00 (0.93–1.06)	0.89	32/370	0.96 (0.88–1.02)	0.22
Maternal urine, μg/L (GW29)	38/380	1.03 (0.99–1.06)	0.10	33/380	1.03 (0.99–1.07)	0.07	34/380	0.95 (0.89–1.01)	0.12
Dietary intake, μg/d (4M)	37/373	0.94 (0.87–1.00)	0.07	31/373	0.99 (0.92–1.05)	0.68	32/373	0.91 (0.83–0.98)	0.02
Breast milk, μg/kg (4M)	23/256	1.01 (1.00–1.04)	0.19	20/256	0.95 (0.85–1.03)	0.32	16/256	0.89 (0.76–1.00)	0.10
Infant urine, μg/L (4M)	25/266	0.99 (0.93–1.04)	0.85	21/266	1.00 (0.93–1.05)	0.91	23/266	0.99 (0.93–1.04)	0.82
ADJUSTED3
Dietary intake, μg/d (GW34)	38/368	0.94 (0.88–1.01)	0.10	32/368	1.00 (0.93–1.06)	0.89	31/368	0.95 (0.87–1.02)	0.15
Maternal urine, μg/L (GW29)	38/378	1.03 (0.99–1.06)	0.11	33/378	1.03 (0.99–1.07)	0.09	33/378	0.96 (0.90–1.01)	0.17
Dietary intake, μg/d (4M)	37/372	0.94 (0.87–1.00)	0.07	31/372	0.99 (0.92–1.05)	0.71	31/372	0.90 (0.82–0.97)	0.01
Breast milk, μg/kg (4M)	23/256	1.01 (1.00–1.06)	0.17	20/256	0.96 (0.86–1.04)	0.39	16/256	0.89 (0.76–1.00)	0.11
Infant urine, μg/L (4M)	25/265	1.00 (0.93–1.05)	0.90	21/265	1.00 (0.93–1.06)	0.98	22/265	0.98 (0.91–1.04)	0.63

Concentrations were included in the models as continuous explanatory variables and the odds ratios are calculated for an increase of 10 μg.

¹Number of children with allergy diagnosis.

²Number of children without allergy diagnosis.

³All models were adjusted for the covariates: allergic heredity (yes/no), older sibling (yes/no) and season of birth (dark/bright).