Effectiveness of the iodine prophylaxis model adopted in Poland

Objective : Most of the Polish territory has been classified as an iodine-deficient and endemic goiter area according to the International Council for Control of Iodine Deficiency (ICCIDD) criteria. In 1997 the obligatory model of iodine prophylaxis was implemented. Our investigations were aimed at the effectiveness of iodine prophylaxis in Poland. Methods : We assessed urinary iodine excretion and goiter prevalence in 5663 children aged 6–12 yr. The population of children from the same 27 schools was investigated from 1992 to 1994 (1406 girls and 1244 boys) and from 1999 to 2005 (1563 girls and 1450 boys) using identical laboratory and ultrasound methods. Results : We found significant increase in iodine urinary concentration (median 52 μg/l vs 93 ug/l, p