Table 2 UIC analysed according to participating regions.

From: Iodine Deficiency in Zhejiang Pregnant Women in the Context of Universal Salt Iodization Programme

Trimester

Region

n

Median UIC (μg/L)

P

1st

Coastal

870

127.17 (79.93–193.07)

0.023*, 0.028

Sub-coastal

1085

133.05 (89.35–199.41)

 

Inland

565

134.95 (82.99–217.50)

 

2nd

Coastal

1684

119.74 (73.80–191.98)

0.000*, 0.000

Sub-coastal

1406

131.23 (85.13–193.52)

 

Inland

1171

150.69 (91.32–218.58)

 

3rd

Coastal

897

113.00 (75.32–173.69)

0.000*, 0.000

Sub-coastal

646

130.82 (83.49–196.00)

 

Inland

571

142.00 (95.86–225.34)

 

Total

Coastal

3310

119.38 (75.58–187.20)

0.000*, 0.000*

Sub-coastal

3023

131.30 (85.66–196.00)

 

Inland

2228

146.00 (89.68–219.09)

 
  1. *Kruskal-Wallis tests were performed for three groups. Mantel-Haenszel test of linear association was performed to test for linear trend.