From: Assessment of iodine importance and needs for supplementation in school-aged children in Portugal
 | Yes | No | Do not know |
---|---|---|---|
Fish | n = 517 (74.8%) | n = 23 (3.3%) | n = 151 (21.9%) |
Seafood | n = 513 (74.2%) | n = 15 (2.2%) | n = 163 (23.6%) |
Algae | n = 507 (73.4%) | n = 13 (1.9%) | n = 171 (24.7%) |