From: Geographical influences on the iodine status in pregnant women, neonates, and school-age children in China
Category of household salt for cooking
Median (IQR), μg/L
Inland
Coast
Iodized
182.8 (117.2–250.5)1,3
170.1 (115.1–235.0)2**
Non-iodized
158.6 (115.0–213.6)4*
132.0 (83.1–192.1)
Total
181.5 (117.0–249.7)
156.0 (103.0–222.0)