Table 1. NIPPON DATA80 FFQ vs NNSJ80 estimates on egg intake in 5228 women and 4127 men.

Women NNSJ_est range (g)	FFQ (egg)					Total	Men NNSJ_est range (g)	FFQ (egg)					Total
	1	2	3	4	5			1	2	3	4	5
1 89.0–250.0	10	38	15	8	1	72	1 85.7–199.4	24	88	26	14	3	155
	0.19	0.73	0.29	0.15	0.02	1.38		0.58	2.13	0.63	0.34	0.07	3.76
2 44.2–88.7	34	609	468	257	34	1402	2 45.4–85.6	82	605	431	228	27	1373
	0.7	11.7	9.0	4.9	0.7	26.8		2.0	14.7	10.4	5.5	0.7	33.3
3 28.0–44.1	13	455	598	553	70	1689	3 29.2–45.3	31	391	397	378	39	1236
	0.3	8.7	11.4	10.6	1.3	32.3		0.8	9.5	9.6	9.2	0.9	30.0
4 9.1–27.9	14	263	533	794	152	1756	4 7.5–29.1	17	268	356	520	58	1219
	0.3	5.0	10.2	15.2	2.9	33.6		0.4	6.5	8.6	12.6	1.4	29.5
5 0–9.0	1	40	73	144	51	309	5 0–7.4	2	18	32	74	18	144
	0.0	0.8	1.4	2.8	1.0	5.9		0.1	0.4	0.8	1.8	0.4	3.5
Total	72	1405	1687	1756	308	5228	Total	156	1370	1242	1214	145	4127
	1.4	26.9	32.3	33.6	5.9	100.0		3.8	33.2	30.1	29.4	3.5	100.0

Cross table for comparing NIPPON DATA80 food frequency questionnaires (FFQ) data on egg intake and re-categorized NNSJ80 data on egg intake (categories and ranges in g/day) to correspond to NIPPON DATA80 FFQ categories. FFQ (egg) 1 to 5 correspond to egg consumption ≥2 eggs/day, about 1 egg/day, about 1 egg/2 days, about 1 to 2 eggs/week, and less than once/week, respectively. Upper datum in each cell is frequency and lower one in italic is percentage of total.

NNSJ_est = estimated data from the National Nutrition Survey.