Table 1.

Characteristics of Study Population Stratified by Case–Control of Coronary Artery Disease at the Time of Completion of Questionnaire

	n	No CAD	n	CAD	p
Age	506	57.0 ± 8.1	137	58.5 ± 7.6	0.069
Race/ethnicity
White	360	71.1%	97	70.8%	0.25
Asian	77	15.2%	15	10.9%
Black	9	1.8%	3	2.2%
Other	37	7.3%	16	11.7%
Unknown	23	4.5%	6	4.4%
No. pregnancies		2.2 ± 1.7		2.6 ± 1.7	0.005
Reported maximum duration of breastfeeding
Never pregnant/child	217	42.9%	44	32.1%	0.012
1+ child; never breastfed	34	6.7%	16	11.7%
1–4 months	53	10.5%	27	19.7%
5–9 months	72	14.2%	16	11.7%
10–18 months	91	18.0%	21	15.3%
19+ months	39	7.7%	13	9.5%
Reported total duration of breastfeeding
Never pregnant/child	217	42.9%	44	32.1%	0.023
1+ child; never breastfed	34	6.7%	16	11.7%
0–7 months	68	13.4%	27	19.7%
8–15.5 months	55	10.9%	22	16.1%
16–26 months	67	13.2%	14	10.2%
26.5+ months	65	12.8%	14	10.2%
BMI (kg/m2)	491	27.2 ± 11.1	136	28.5 ± 7.6	0.014
History of tobacco use	53	10.5%	16	11.7%
Diagnosis of hypertension
Yes	220	43.5%	102	74.5%	<0.0001
Diastolic BP		78.6 ± 8.1		78.1 ± 11.4	0.49
Systolic BP		131.1 ± 14.6		128.6 ± 14.2	0.12
No	286	56.5%	35	25.5%
Diastolic BP		72.9 ± 7.6		73.5 ± 9.0	0.77
Systolic BP		116.4 ± 11.5		117.6 ± 10.9	0.64
Diagnosis of hyperlipidemia
Yes	248	49.0%	117	85.4%	<0.0001
Total cholesterol		206.3 ± 31.6		192.9 ± 38.9	0.001
LDL		122.9 ± 26.7		112.0 ± 34.8	0.0004
HDL		62.1 ± 19.4		59.6 ± 15.0	0.54
Triglycerides		119.3 ± 70.0		121.2 ± 76.2	0.9
No	258	51.0%	20	14.6%
Total cholesterol		185.6 ± 26.0		181.8 ± 39.1	0.73
LDL		105.1 ± 23.6		98.1 ± 27.9	0.28
HDL		67.2 ± 15.1		69.4 ± 17.8	0.89
Triglycerides		78.4 ± 35.2		78.5 ± 36.4	0.95
Diagnosis of diabetes
Yes	69	13.6%	40	29.2%	<0.0001
Glucose		139.4 ± 40.1		141.6 ± 40.3	0.69
No	437	86.4%	97	70.8%
Glucose		98.4 ± 11.7		101.6 ± 12.7	0.016

BMI, body mass index; BP, blood pressure; CAD, coronary artery disease; HDL, high-density lipoprotein; LDL, low-density lipoprotein.