Rural–urban differences in the prevalence of cognitive impairment in independent community-dwelling elderly residents of Ojiya city, Niigata Prefecture, Japan

Table 1 Study area profiles

	Study areas
	Heisei-cho	Matto	Katakai^a
Survey year	2011	2012	2013
Residence (urban or rural)	Urban	Rural	Urban
Proportion of farms	0 %	64.0 %	4.8 %
Proportion of people aged ≥65 years	32.4 %	36.4 %	34.4 %
Proportion of people using long-term care insurance	16.2 %	18.6 %	21.0 %
Number of people aged ≥65 years^b	166	249	177
Participation rate	88.6 %	96.0 %	85.3 %

^aThe four central subareas, including Ninocho, Chabatake, Omotesannocho, and Inaba, in Katakai were investigated
^bPeople using long-term care insurance were excluded

ISSN: 1347-4715