Table 1. Basic characteristics of participants.

	25–34		35–44		45–54		55–64		55–64
	%	n	%	n	%	n	%	n	%	n
	9.9	94	25.1	238	41.2	391	23.9	227	100	950
Annual personal income (millions of yen)
2–6	45.7	43	18.9	45	11.0	43	19.8	45	18.5	176
6–10	31.9	30	45.4	108	31.7	124	40.1	91	37.2	353
10 and over	13.8	13	30.7	73	45.3	177	33.5	76	35.7	339
unknown	8.5	8	5.0	12	12.0	47	6.6	15	8.6	82
Current smoker	23.4	22	28.2	67	34.3	134	29.5	67	30.5	290
Diabetes	0	0	1.3	3	6.6	26	12.8	29	6.1	58
Hypertension	3.2	3	10.1	24	25.1	98	37.0	84	22.0	209
BMI 25 or over	13.8	13	27.7	66	38.1	149	29.5	67	31.1	295