ABSTRACT
Objective:To study the iodine nutrition status of pregnant women in Baoji City Shaanxi Province, and to provide basis for iodine supplementation scientifically in pregnancy period.Methods:From January 2018 to December 2020, 12 counties and districts in Baoji City were divided into 5 districts according to different directions each year, 1 township (sub-district office) was selected from each district and 21 pregnant women from each township (sub-district office) were selected, domestic salt samples and instant urine samples were collected to determine the contents of iodine.Results:A total of 3 783 pregnant women's domestic salt samples were collected, the median salt iodine was 24.00 mg/kg, the difference of median salt iodine among different years was statistically significant ( H = 118.22, P < 0.01). A total of 3 783 urine samples were tested, and the median urinary iodine was 192.44 μg/L. The median urinary iodine of pregnant women in urban, plain and mountainous areas (205.08, 193.61 and 182.75 μg/L) was significantly different ( H = 17.53, P < 0.01); the median urinary iodine of pregnant women in different pregnancy periods (early, mid and late: 194.47, 198.19 and 183.54 μg/L) was significantly different ( H = 6.18, P < 0.05). There was no significant difference in median urinary iodine of pregnant women among different ages ( H = 2.25, P > 0.05). Conclusions:The iodine nutrition of pregnant women in Baoji City is generally at an appropriate level. It is necessary to strengthen the health education for key populations, advocate scientific consumption of iodized salt for improving their iodine nutrition.