Table 2.

Selected Characteristics (Number and Percentage) of 813 Mother-Child Pairs in Project Viva According to Quartile of Second-Trimester Choline Intake, Eastern Massachusetts, 1999–2002 to 2008–2011

			Quartile of Second-Trimester Choline Intake
	Overall		Quartile 1		Quartile 2		Quartile 3		Quartile 4
	No.	%	No.	%	No.	%	No.	%	No.	%
Mother
Race/ethnicity
Asian	48	5.9	6	3.0	11	5.4	8	3.9	23	11.3
Black	86	10.6	23	11.3	21	10.3	17	8.3	25	12.3
Hispanic	31	3.8	3	1.5	8	3.9	10	4.9	10	4.9
White	619	76.1	162	79.8	158	77.8	165	80.9	134	66.0
>1 race/other	29	3.6	9	4.4	5	2.5	4	2.0	11	5.4
Education
Completed high school or less	197	24.2	60	29.6	41	20.2	44	21.6	52	25.6
Completed college	294	36.2	75	37.0	77	37.9	75	36.8	67	33.0
Completed graduate degree	322	39.6	68	33.5	85	41.9	85	41.7	84	41.4
Multipara	420	51.7	95	46.8	109	53.7	105	51.5	111	54.7
Smoking status
Never smoker	574	70.6	143	70.4	143	70.4	139	68.1	149	73.4
Smoked during early pregnancy	64	7.9	19	9.4	12	5.9	17	8.3	16	7.9
Former smoker	175	21.5	41	20.2	48	23.7	48	23.5	38	18.7
Child
Male sex	402	49.5	98	48.3	96	47.3	106	52.0	102	50.3
Household
Income >$70,000/year	538	69.4	122	63.9	140	70.0	150	76.5	126	67.0
Biological father
Completed high school or less	235	28.9	70	34.5	57	28.1	52	25.5	56	27.6
Completed college	307	37.8	65	32.0	85	41.9	83	40.7	74	36.5
Completed graduate degree	271	33.3	68	33.5	61	30.1	69	33.8	73	36.0