Table 3. Median UIC of pregnant women (n = 145) according to age, trimester, salt iodine level, literacy level, and residence in BUNMAP cohort study, Butajira, Ethiopia, February, 2019.

Characteristics	N (%)	Median UIC(IQR), μg/L
Maternal age (years old)
18–24	50(34.5)	149.9 (79–235.65)
25–34	85(58.6)	150.2 (92.3–244.6)
35–49	10(6.9)	155 (108.7–214.4)
Trimester
First	23(15.9)	138.7(66.7–236.6)
Second	47(32.4)	170.7(96–235.8)
Third	75(51.7)	145.7(88.6–238.9)
Residence
Rural	58(40)	144.1(73.7–234.4)
Urban	87(60)	153.3(88.6–250.3)
Salt iodine level (ppm)
< 15	12(8.3)	112.3(59.7–206.7)
15–40	71(49)	129.4(63.7–236.6)
> 40	62(42.7)	182.9(125–252.1)
Educational status
No formal education	40	140.5(68.5–237.1)
Have formal education	105	153.3(88.5–236.2)