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

Table 5 Urinary iodine and urinary creatinine during different pregnancy

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)	0.58^b (0.45~0.88)	1.08^ab (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

^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

ISSN: 1743-7075