TABLE 2.
Estimates of the prevalence of deficient iodine intake, by subgroup1
| Prevalence of iodine intake <EAR, % (SE) |
||||||
| n | EAR, μg/d | P10 | Median | Mean | P90 | |
| Children | ||||||
| Age 1−3 y | 406 | 65 | 9.0 (2.3) | 3.5 (1.4) | 0.8 (0.6) | 0.0 (NA) |
| Age 4−8 y | 782 | 65 | 5.1 (1.8) | 0.9 (0.6) | 0.1 (0.1) | 0.0 (NA) |
| Males | ||||||
| Age 9−13 y | 375 | 73 | 7.7 (3.6) | 1.2 (1.3) | 0.1 (0.1) | 0.0 (NA) |
| Age 14−18 y | 356 | 95 | 23.1 (4.7) | 6.1 (3.4) | 0.3 (0.5) | 0.0 (NA) |
| Age 19−30 y | 482 | 95 | 49.0 (2.2) | 18.6 (4.2) | 3.7 (2.2) | 0.1 (0.2) |
| Age 31−50 y | 803 | 95 | 47.3 (2.2) | 18.9 (2.9) | 3.1 (1.5) | 0.1 (0.1) |
| Age 51–70 y | 795 | 95 | 52.1 (3.2) | 21.1 (2.6) | 3.8 (1.4) | 0.2 (0.2) |
| Age ≥71 y | 383 | 95 | 47.9 (3.3) | 24.7 (4.0) | 5.5 (2.9) | 0.1 (−0.2) |
| Females | ||||||
| Age 9−13 y | 387 | 73 | 11.3 (4.7) | 1.5 (1.6) | 0.1 (0.1) | 0.0 (NA) |
| Age 14−18 y | 327 | 95 | 52.9 (4.7) | 18.5 (6.6) | 4.0 (3.3) | 0.1 (0.2) |
| Age 19−30 y | 495 | 95 | 64.2 (4) | 25.0 (4.8) | 5.1 (3.4) | 0.0 (NA) |
| Age 31−50 y | 940 | 95 | 57.8 (2.4) | 25.1 (3.1) | 6.1 (2.2) | 0.2 (0.2) |
| Age 51−70 y | 773 | 95 | 63.4 (2.5) | 31.3 (2.7) | 8.7 (2.5) | 0.4 (0.4) |
| Age ≥71 y | 442 | 95 | 60.4 (2.9) | 32.0 (3.2) | 10.1 (3.0) | 1.0 (0.9) |
1
Estimates are based on iodine intake from food sources only and are calculated as the proportion of usual intakes below the EAR. 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). EAR, Estimated Average Requirement; NA, not available; P10, 10th percentile; P90, 90th percentile.