Table 1.

Main characteristics of the study population (n = 100) and parameters of iodine supply.

Characteristics	Values
Age (years), median (IQR)	25 (20–29)
Education, %
≤8 years	55
>8 years	40
Not known	5
Unemployment, %	87
Parity, %
Nulliparous	40
Multiparous	60
Previous miscarriage, %	19
	Pregnancy	Lactation
Gestational week at sampling, median (IQR)	20 (15–28)	NA
Preterm birth (<37 weeks), %	11	NA
Weeks after delivery at sampling, median (IQR)	NA	7 (6–9)
Use of iodised salt, %	48	43
Use of any multivitamin, %	79	33
Use of iodine-containing multivitamin, %	52	20
Smoking, %	27	25
UIC (µg/L), median (IQR)	66 (31–108)	49 (32-76)
UIC (µg/g creatinine), median (IQR)	57 (35–120)	58 (40–92)
MIC (µg/L),a median (IQR)	NA	188 (116–257)

^an = 93.

IQR, interquartile range; MIC, milk iodine concentration; UIC, urinary iodine concentration.