Table 1.

Iodine intake in 61,904 pregnant Norwegian women in the Norwegian Mother and Child Cohort Study, 2002–2008.

	All			Iodine containing supplement user
				No		Yes
n (%)	61,904			42,329 (68.4)		19,575 (31.6)
Iodine intake, μg/day	n	%	Cum%	n	Cum%	n	Cum%
<50	674	1.1	1.1	667	1.6	7	0.0
50–70	2272	3.7	4.8	2208	6.8	64	0.4
70–100	7006	11.3	16.1	6658	22.5	348	2.1
100–150	16,061	25.9	42.0	14,267	56.2	1794	11.3
150–175	7572	12.2	54.3	6044	70.5	1528	19.1
175–250	14,886	24.0	78.3	8970	91.7	5916	49.3
250–500	12,663	20.5	98.8	3463	99.9	9200	96.3
≥500	770	1.2	100	52	100	718	100