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Table 1 Demographic information of studied participants based on iodine status

From: Maternal and neonatal outcomes and determinants of iodine deficiency in third trimester of pregnancy in an iodine sufficient area

VariablesUrinary Iodine < 150 μg/lUrinary Iodine ≥150 μg/lAll participantsP-value
Mean(SD), N(%)Mean(SD), N(%)Mean(SD), N(%)
Urinary iodine concentration (μg/l)131.3 (130–137)176 (165–197)176 (165–196)< 0.001
Age (years)29.3 ± 4.929.2 ± 14.829.2 ± 14.50.91
No. of live deliveries1.47 ± 0.891.73 ± 0.861.71 ± 0.870.091
No. of previous pregnancies1.91 ± 0.912.07 ± 12.06 ± 10.25
Weight before pregnancy (Kg)62.4 ± 11.264.5 ± 20.364.3 ± 19.90.25
The timing between the two most recent pregnancies (year)3.25 ± 0.294.57 ± 0.154.5 ± 0.140.002
Weight gain during pregnancy (Kg)9 ± 512.8 ± 5.512.6 ± 5.6< 0.001
Type of pregnancy
 Planned25 (4.0)600 (96)625 (72.93)0.004
 unplanned21 (9.05)211 (90.95)232 (27.07)
Mother’s level of education
 Illiterate2 (8.3)22 (91.7)24 (2.72)< 0.001
 Senior high27 (12)198 (88)225 (25.5)
 B.S.16 (2.6)606 (97.6)622 (70.5)
 M.S. or higher1 (9)10 (91)11 (1.25)
Iodinated salt consumption
 yes41 (5.2)751 (94.8)792 (89.59)0.91
 no5 (5.4)87 (94.6)92 (10.41)
Complement intake during pregnancy
 yes32 (4)775 (96)807 (91.22)< 0.001
 No14 (18.2)63 (81.8)77 (8.71)
Fish consumption
 yes34 (5.06)638 (94.94)672 (77.51)0.54
 No12 (6.15)183 (93.85)195 (22.49)
Egg consumption
 Twice weekly30 (5.3)539 (94.7)569 (66.09)0.93
 Less than twice per week15 (5.1)277 (94.9)292 (33.91)