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Table 5 Urinary iodine and urinary creatinine during different pregnancy

From: Evaluation of median urinary iodine concentration cut-off for defining iodine deficiency in pregnant women after a long term USI in China

Gestation N V24 h (ml) MUIC (μg/L) UIE (μg/d) MUC (g/L) UCE (g/d) UICr (μg/g)
Total 237 1863 (1450~2395) 107.41 (83.84~150.13) 200.11 (152.75~265.50) 0.54 (0.43~0.72) 1.06 (0.90~1.24) 195.70 (102.81~146.65)
12th 79 1850 (1425~2215) 101.56 (83.18~140.32) 185.00 (142.75~254.76) 0.55 (0.44~0.69) 1.02 (0.94~1.18) 188.26 (144.81~256.74)
24th 79 1900 (1450~2500) 108.00 (85.14~137.00) 209.10 (153.88~270.00) 0.53 (0.40~0.69) 1.05 (0.85~1.24) 204.88 (160.39~272.21)
32th 79 1900 (1400~2300) 113.00 (80.94~157.00) 198.5 (161.28~274.00) 0.58b (0.45~0.88) 1.08ab (0.92~1.32) 195.70 (142.80~233.94)
F   1.69 1.16 1.82 3.62 5.39 1.82
P value   0.1878 0.3149 0.1652 0.03 0.01 0.17
  1. ap < 0.05 between each trimesters with the 12th weeks; bp < 0.05 between each trimesters with the 24th weeks;V24 h, 24-h urine volume; MUIC, median urinary iodine concentration; UIE, urinary iodine excretion; MUC, median urine creatinine; UCE, median urine creatinine excretion; UICr, creatinine-adjusted urine iodine