Table 3.

Median usual daily total folic acid intake with (modelled) and without (current) folic acid fortification of corn masa flour for women aged 15–44 years by race/ethnicity and age, NHANES 2001–2008‡

		Current usual intake (μg/d)		Modelled usual intake (μg/d)		Relative percentage change§ (%)
	Unweighted n	Median	95 % CI	Median	95 % CI	Median	95 % CI
Total	5369	244	230, 258	257	244, 270	3·7	3·1, 4·2
Race/ethnicity∥
Non-Hispanic white	2065	263	239, 287	274	248, 300	3·9	3·3, 4·4
Non-Hispanic black	1384	186	155, 217	197	163, 231	4·6	4·1, 5·1
Mexican American	1362	202	167, 237	243	209, 277	21·0	18·7, 23·3
Acculturation factors¶
Language preference
Spanish all or most of the time	615	191	146, 236	247	205, 289	30·5	27·8, 33·4
Equal Spanish and English	253	185	151, 219	225	189, 261	22·0	20·2, 23·8
English all or most of the time	493	218	154, 282	241	186, 296	8·3	7·3, 9·4
Country of origin
Mexico	648	196	154, 238	252	210, 294	29·9	26·9, 33·0
USA	712	210	180, 240	234	208, 260	10·8	9·2, 12·3
Time living in the USA
<5 years	173	161	122, 200	230	186, 274	45·1	39·7, 50·7
5–14 years	275	205	154, 256	271	207, 335	33·7	29·7, 37·8
≥15 years	904	210	174, 246	239	200, 278	13·1	11·3, 15·0

NHANES, National Health and Nutrition Examination Survey.

‡Data are adjusted for intake day of the week and interview method (in person or by telephone).

§The relative percentage change was the antilog of the difference in the log of modelled intake minus the log of the current intake.

∥Race/ethnicity sub-analyses were restricted to non-Hispanic whites, non-Hispanic blacks and Mexican Americans.

¶Acculturation sub-analyses were restricted to Mexican Americans. Unweighted n might not add up to total number of Mexican-American women because of missing data in acculturation factors.