Table 3.

Odds ratio (OR) for urinary iodine concentration (UIC) < 100 µg/L according to intake of seafood, dairy products and eggs

Dietary products	N	Unadjusted		Adjusted for gender, parental education
		OR (95% CI)	p value	OR (95% CI)	p value
Seafood dinner (all)
< 2 times/week	103	1.22 (0.65–2.28)	0.542	1.27 (0.67–2.43)	0.468
≥ 2 times/week	95	1 (ref.)		1 (ref.)
Seafood (spreads)
< 2 times/week	132	1.26 (0.64–2.49)	0.499	1.29 (0.64–2.58)	0.479
≥ 2 time/week	66	1 (ref.)		1 (ref.)
Dairy products (all)
< 2 times/day	102	1.96 (0.72–5.54)	0.185	2.02 (0.71–5.78)	0.189
≥ 2 times/day	96	1 (ref.)		1 (ref.)
Sweet milk
< 2 times/day	45	2.17 (1.07–4.38)	0.031	2.21 (1.08–4.49)	0.029
≥ 2 times/day	153	1 (ref.)		1 (ref.)
Cultured milk and yoghurt
< 4 times/week	90	1.16 (0.62–2.17)	0.641	1.22 (0.64–2.35)	0.542
≥ 4 time/week	108	1 (ref.)		1 (ref.)
White cheese
< 4 times/week	94	0.95 (0.51–1.78)	0.871	1.04 (0.55–1.98)	0.901
≥ 4 time/week	105	1 (ref.)		1 (ref.)
Brown cheese
< 4 times/week	153	1.21 (0.56–2.60)	0.628	1.28 (0.58–2.83)	0.545
≥ 4 time/week	45	1 (ref.)		1 (ref.)
Eggs
< 2 times/week	117	1.22 (0.59–2.13)	0.723	1.28 (0.66–2.49)	0.463
≥ 2 times/week	81	1 (ref.)		1 (ref.)

All p values are given with logistic regression

95% CI 95% confidence interval