The correlation between the thyroid function and urinary iodine/creatinine ratio of pregnant women attending a tertiary hospital in Beijing, China, during different trimesters

Table 2 Multiple linear regression analysis of factors associated with FT4 levels in different trimesters

Trimester	Variable	β	SE	t	P
First	UI/Cr	0.168	0.075	2.253	0.025
	Age	0.112	0.069	1.627	0.105
	BMI	0.094	0.071	1.325	0.187
	Parity	0.085	0.066	1.289	0.199
	Education	0.103	0.068	1.515	0.131
	Occupation	0.079	0.065	1.215	0.226
	Family history	0.061	0.062	0.984	0.326
Second	UI/Cr	0.205	0.073	2.808	0.005
	Age	0.124	0.067	1.851	0.066
	BMI	0.108	0.069	1.565	0.119
	Parity	0.097	0.064	1.516	0.131
	Education	0.116	0.066	1.758	0.080
	Occupation	0.091	0.063	1.444	0.150
	Family history	0.073	0.060	1.217	0.225
Third	UI/Cr	0.139	0.081	1.716	0.088
	Age	0.098	0.075	1.307	0.193
	BMI	0.084	0.077	1.091	0.277
	Parity	0.072	0.071	1.014	0.312
	Education	0.089	0.074	1.203	0.230
	Occupation	0.065	0.070	0.929	0.354
	Family history	0.049	0.067	0.731	0.466

ISSN: 1472-6823