A Study to Improve the Vitamin A and Iodine Status of Pregnant Women through a Multiple Micronutrient Fortified Salt

Table 5

Median urinary iodine concentration (UIC) mcg/L in the experimental and control groups in the first and third trimesters.

By trimesters	Experimental group (N = 100)	Control group (N = 100)
First trimester	395 (325–474)^ac	362 (300–417)^ad	values
Third trimester	422 (304–479)^bc	327 (270–390)^bd

alues are median (25th–75th percentile). (a) Mann–Whitney test: No significant difference was seen between the experimental and control group at the baseline in the first trimester, so both the groups are homogenous; . (b) Mann–Whitney test: A significant difference is seen between the experimental and control group at the endline in the third trimester, that the experimental group improved significantly; . (c) Wilcoxon signed-rank test: A significant improvement is seen from the first trimester to the third trimester in the experimental group, showing the uptake of iodine from the fortified salt; . (d) Wilcoxon signed-rank test: A significant decline is seen from the first trimester to the third trimester in the control group; .