Iodine nutritional status of women in their first trimester of pregnancy in Catalonia

Table 3 Multivariate logistic regression analysis to determine the role of dietary intake and iodine supplementation on the risk of having an iodine level < 150 μg/L

	β	SE	OR	[95%CI]	p
MODEL 1
Constant	0.633	---	---	---	---
Daily milk consumption
No consumption	Reference	---	---		---
1–2 glasses	−0.453	0.176	0.636	[0.45–0.90]	0.010
> 2 glasses	−0.522	0.239	0.593	[0.37–0.95]	0.029
Iodized salt intake
No consumption	Reference	---	---		---
consumption	−0.389	0.145	0.678	[0.51–0.90]	0.007
Iodine supplementation
No consumption	Reference	---	---		---
consumption	−0.890	0.138	0.410	[0.31–0.54]	<0.001
MODEL 2
Constant	0.617	---	---	---	---
Iodized salt intake and daily milk consumption
No consumption	Reference	---	---		---
Only Iodized salt	−0.351	0.320	0.704	[0.38–1.32]	0.276
Only Milk	−0.445	0.216	0.641	[0.42–0.98]	0.039
Iodized salt and Milk	−0.850	0.236	0.427	[0.27–0.68]	<0.001
Iodine supplementation
No consumption	Reference	---	---		---
consumption	−0.888	0.138	0.411	[0.31–0.54]	<0.001

Result of exploratory multivariate logistic regression analysis. The dependent variable was determined by the presence of UIC <150μg/L.
Model 1 shows the covariates that were statistically significant (p < 0.05), taking under consideration Akaike’s information criterion and biological plausibility
Model 2 was obtained by combining salt intake and milk in a single variable

ISSN: 1471-2393