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Fig. 3 | Environmental Health and Preventive Medicine

Fig. 3

From: Correlations of water iodine concentration to earlier goitre frequency in Sweden—an iodine sufficient country with long-term iodination of table salt

Fig. 3

Relationship between water iodine concentration (WIC) and frequency of goitre in 1929, > 15% goitre vs non-goitre areas (p = 0.001). ooutlier, i.e. value that is 1.5–3 times the interquartile range (IQR) higher than the third quartile. *extreme value, i.e. value that is more than 3 times the IQR higher than the third quartile

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Environmental Health and Preventive Medicine

ISSN: 1347-4715

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