Table 1.

Sources of information in the Daiko Study

Media	n	(%)
Leaflets distributed to mailboxes	2,722	(65.6)
Personal communications	1,065	(25.7)
Leaflets (Other)	76	(1.8)
Newspaper	64	(1.5)
Web page of Daiko Study	24	(0.6)
Postings at Daiko Medical Center	15	(0.4)
Other	104	(2.5)
No answer	158	(3.8)

* 4152 participants were questioned during 199 out of 201 enrollment days from November 8, 2008 to May 31, 2010.

* 76 participants had duplicate responses.