TY - JOUR
T1 - The Prevalence and Incidence of Dementia in Elderly Urban Japanese
T2 - The Sendai Longitudinal Study of Aging
AU - Minami, Yuko
AU - Hisamichi, Shigeru
AU - Tsuji1, Ichiro
AU - Key, Penelope M.
AU - Asano, Hirotake
AU - Sato, Makito
AU - Shinoda, Kazuo
PY - 1993
Y1 - 1993
N2 - To investigate the age-associated changes in physical and mental functions, epidemiological surveys were conducted for a random sample (N = 3,704) of residents aged 65 years and over in Sendai City, Japan, in 1988 and 1991. The frequency of dementia was derived from the epidemiological surveys. The prevalence of dementia aged 65 years and over in 1988 was 5.13 per 100 persons with age-specific rates of 0.78,1.89,6.02,11.95 and 26.31 per 100 persons for the age groups 65-69,70-74, 75-79, 80-84, and 85+, respectively. The incidence during 1988-1991 was 1.74 per 100 person-years with age-specific rates of 0.73, 0.87, 2.29, 3.62, and 8.48 per 100 person-years, respectively. Using the Japan population in 1985, the age-standardized rates for females were higher than those for males for both prevalence and incidence. The prevalence in this study was consistent with those of other population-based studies in urban Japan. There are few studies of the incidence of dementia in Japan, and this is the first such study based on a longitudinal design in an urban area of Japan. J Epidemiol, 1993; 3 : 83-89.
AB - To investigate the age-associated changes in physical and mental functions, epidemiological surveys were conducted for a random sample (N = 3,704) of residents aged 65 years and over in Sendai City, Japan, in 1988 and 1991. The frequency of dementia was derived from the epidemiological surveys. The prevalence of dementia aged 65 years and over in 1988 was 5.13 per 100 persons with age-specific rates of 0.78,1.89,6.02,11.95 and 26.31 per 100 persons for the age groups 65-69,70-74, 75-79, 80-84, and 85+, respectively. The incidence during 1988-1991 was 1.74 per 100 person-years with age-specific rates of 0.73, 0.87, 2.29, 3.62, and 8.48 per 100 person-years, respectively. Using the Japan population in 1985, the age-standardized rates for females were higher than those for males for both prevalence and incidence. The prevalence in this study was consistent with those of other population-based studies in urban Japan. There are few studies of the incidence of dementia in Japan, and this is the first such study based on a longitudinal design in an urban area of Japan. J Epidemiol, 1993; 3 : 83-89.
KW - aged
KW - dementia
KW - incidence
KW - longitudinal
KW - prevalence
KW - studies
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U2 - 10.2188/jea.3.83
DO - 10.2188/jea.3.83
M3 - Article
AN - SCOPUS:85007848298
SN - 0917-5040
VL - 3
SP - 83
EP - 89
JO - Journal of Epidemiology
JF - Journal of Epidemiology
IS - 2
ER -