Table 2 Correlates associated with subclinical iodine deficiency in logistic regression model among pregnant women in Tanzania,2010 TDHS

Age (Years)

0.1680*

0.2012*

 15–24

Reference

 25–34

1.24(0.94–1.63)

0.1335

1.32(0.89–1.95)

0.1671

 35–49

1.38(0.92–2.06)

0.1157

0.90(0.48–1.69)

0.7385

Education Level

0.0006*

0.9605*

 No education

Reference

 Primary education

0.74(0.54–1.00)

0.0516

0.99(0.69–1.44)

0.9824

 Secondary or higher

0.31(0.17–0.56)

0.0001

0.89(0.40–2.02)

0.7862

Wealth Index

<0.0001*

<0.0001*

 Poorest

9.48(5.53–16.23)

<0.0001

4.25(2.26–7.99)

<0.0001

 Poorer

10.22(6.10–17.12)

<0.0001

5.55(3.02–10.20)

<0.0001

 Middle

6.31(3.78–10.51)

<0.0001

3.17(1.77–5.69)

0.0001

 Richer

4.68(2.76–7.96)

<0.0001

3.63(2.00–6.58)

<0.0001

 Richest

Reference

Iodine content in household salt

<0.0001*

<0.0001*

 Inadequate

Reference

 Adequate

0.28(0.21–0.37)

<0.0001

0.38(0.28–0.53)

<0.0001

Family size

<0.0001*

0.0701*

 < 5 persons

Reference

 ≥ 5 persons

1.95(1.49–2.54)

<0.0001

1.38(0.97–1.94)

0.0701

Geographic Zone

<0.0001*

<0.0001*

 Lake

Reference

 Western

1.99(1.34–2.96)

0.0007

1.73(1.07–2.77)

0.0246

 Northern

0.54(0.34–0.85)

0.0075

0.57(0.32–0.99)

0.0463

 Central

1.19(0.69–2.05)

0.5248

0.73(0.39–1.37)

0.3236

 Southern Highlands

0.68(0.44–1.07)

0.0968

0.76(0.45–1.29)

0.3120

 Eastern

0.16(0.09–0.29)

<0.0001

0.23(0.12–0.46)

<0.0001

 Southern

3.61(1.96–6.67)

<0.0001

2.37(1.17–4.81)

0.0169

 Zanzibar

0.79(0.35–1.79)

0.5666

0.84(0.31–2.30)

0.7343

Number of children

<0.0001*

0.0453*

 0

Reference

 1–4

2.23(1.63–3.06)

<0.0001

1.73(1.12–2.67)

0.0136

 5+

2.78(1.77–4.35)

<0.0001

1.85(0.92–3.73)

0.0854

Fish consumption

0.0029*

0.7020*

 < 1 day/Week

Reference

 ≥ 1 day/Week

0.67(0.52–0.87)

0.0029

0.93(0.66–1.32)

0.7020

Pregnancy trimester

0.0108*

0.0983*

 First

Reference

 Second

1.33(0.97–1.84)

0.0789

1.26(0.86–1.85)

0.2392

 Third

0.84(0.61–1.17)

0.3080

0.85(0.57–1.26)

0.4192