Table 1.

Selected characteristics of study participants by quintiles of dietary fiber and whole grain intakes

	Total population	Quintiles of dietary fiber intake					Quintiles of whole grain intake
		Q1	Q2	Q3	Q4	Q5	Q1	Q2	Q3	Q4	Q5
Participants (n)	49,2321	98,464	98,464	98,465	98,464	98,464	98,464	98,465	98,464	98,464	98,464
Dietary fiber (g/day)1	19.5	11	16	19	22	30	15	17	19	21	24
Whole grain (servings/1,000kcal)1	0.7	0.4	0.5	0.7	0.8	1.0	0.2	0.4	0.6	0.8	1.4
Age (years)	62	61	62	62	62	63	62	62	62	62	63
Men (%)	60	45	54	60	66	73	63	59	58	59	60
College/post college (%)	62	54	60	62	65	68	56	61	63	65	65
Body mass index (kg/m2)	27.1	27.3	27.3	27.3	27.0	26.5	27.3	27.4	27.2	27.0	26.6
Current smoking (%)	12	24	14	10	7	5	20	13	11	8	7
Physical activity, ≥3 times/week (%)	46	31	39	46	52	62	37	43	47	50	53
Current menopausal hormone therapy (%)	44	41	45	45	46	45	39	43	45	47	47
Family history of cancer (yes, %)	49	48	49	49	49	48	47	48	49	49	49
Red meat (g/1000 kcal)1	35	42	39	36	32	24	41	38	35	32	27
Total fat (% energy/day)1	30	33	32	31	29	26	32	32	31	30	28
Energy (kcal/day)1	1831	1758	1822	1861	1871	1844	1970	1906	1853	1774	1654

¹Mean values