TABLE 3.

Estimates of the prevalence of excessive iodine intake, by subgroup¹

			Prevalence of iodine intake >UL, % (SE)
	n	UL, μg/d	P10	Median	Mean	P90
Children
Age 1−3 y	406	200.0	36.3 (2.7)	58.0 (2.6)	71.1 (3.0)	96.0 (2.5)
Age 4−8 y	782	300.0	2.0 (1.1)	13.2 (2.8)	29.2 (3.0)	85.0 (3.5)
Males
Age 9−13 y	375	600.0	0.0 (NA)	0.0 (NA)	0.0 (NA)	17.9 (7.9)
Age 14−18 y	356	900.0	0.0 (NA)	0.0 (NA)	0.0 (NA)	1.3 (1.9)
Age 19−30 y	482	1100.0	0.0 (NA)	0.0 (NA)	0.0 (NA)	1.4 (1.3)
Age 31−50 y	803	1100.0	0.0 (NA)	0.0 (NA)	0.0 (NA)	0.9 (0.7)
Age 51–70 y	795	1100.0	0.0 (NA)	0.0 (NA)	0.0 (NA)	1.0 (0.7)
Age ≥71 y	383	1100.0	0.0 (NA)	0.0 (NA)	0.0 (NA)	0.0 (NA)
Females
Age 9−13 y	387	600.0	0.0 (NA)	0.0 (NA)	0.0 (NA)	8.0 (6.5)
Age 14−18 y	327	900.0	0.0 (NA)	0.0 (NA)	0.0 (NA)	0.0 (NA)
Age 19−30 y	495	1100.0	0.0 (NA)	0.0 (NA)	0.0 (NA)	0.0 (NA)
Age 31−50 y	940	1100.0	0.0 (NA)	0.0 (NA)	0.0 (NA)	0.0 (NA)
Age 51−70 y	773	1100.0	0.0 (NA)	0.0 (NA)	0.0 (NA)	0.0 (NA)
Age ≥71 y	442	1100.0	0.0 (NA)	0.0 (NA)	0.0 (NA)	0.0 (NA)

¹Estimates are based on iodine intake from food sources only and are calculated as the proportion of usual intakes above the UL. Values are based on food intake data reported by NHANES 2009–2010 (4) and measured values of iodine concentration from the Total Diet Study for foods sampled in 2004–2011 (5). NA, not available; P10, 10th percentile; P90, 90th percentile; UL, Tolerable Upper Intake Level.