Transient cerebral ischemic attacks in a Japanese community, Hisayama, Japan.

Ueda, Kazuo; Kiyohara, Yutaka; Hasuo, Yutaka; Yanai, Toshiro; Kawano, Hideo; Wada, Junichi; Kato, Ikunoshin; Kajiwara, Eiji; Omae, Teruo; Fujishima, Masatoshi

doi:10.1161/01.str.18.5.844

Cited by 32 publications

(28 citation statements)

References 30 publications

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“…4 Similar to these studies, 1,4 the percentage of carotid TIAs in Novosibirsk is substantially higher than that reported in Japan. 20 Our data confirm previous observations 4,22,23 that TIA incidence, like incidence rates of acute myocardial infarction, exhibits no substantial geographic differences. A similarity of certain epidemiological characteristics of TIA and stroke observed in Novosibirsk further justifies the suggestion 24,25 that TIA is a mild form of ischemic stroke.…”

Section: Feigin Et Al Tia Incidence In Russia 11supporting

confidence: 92%

“…Our data on the TIA incidence rate, age-and sex-adjusted to the US white population in 1980, in Novosibirsk in 1987-1988 (18/100 000 per year) are similar to those for Hisayma, Japan, in 1961-1982 (22/100 000). 4,20 The overall TIA incidence rate in Novosibirsk adjusted to the European population (27/100 000; 95% CI, 9 to 79) is similar to that reported in a population-based study in Spain (21/100 000; 95% CI, 12 to 30) 7 and Italy (42/100 000; 95% CI, 33 to 54). 5 In Dijon, France, the world-standardized incidence of TIA over the 10-year period (1985-1994) 2 varied from 8.4 to 29.2 cases per 100 000 residents per year in men and from 3.9 to 18.8 cases per 100 000 residents per year in women, but these changes were not statistically significant.…”

Section: Discussionsupporting

confidence: 78%

“…While some methodological differences may account for the differences in the ratio of TIA to stroke in the populations compared, we agree with Brown et al 4 that a true between-countries difference in the ratio of TIA to stroke is possible. A similar correlation of very low TIA incidence with relatively high stroke incidence was noted in Hisayama, Japan, in 1961-1982 20 and in Kamogawa, Japan, 11 in 1996 -1997. However, the reason for relatively low incidence of TIA compared with the high stroke incidence in Novosibirsk remains to be studied.…”

Section: Discussionsupporting

confidence: 72%

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A Population-Based Study of Transient Ischemic Attack Incidence in Novosibirsk, Russia, 1987–1988 and 1996–1997

Feigin¹,

Шишкин²,

Tzirkin³

et al. 2000

Stroke

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Background and Purpose-Population-based data on transient ischemic attack (TIA) incidence are scarce. This study defines incidence rates of first-ever TIA in Novosibirsk, Russia, during 1987Russia, during -1997 and compares the incidence of first TIA with that of first stroke. Methods-This is a prospective registry population-based study of all new cases of TIA and stroke in an overall population of 455 765 residents of Novosibirsk. All new TIA and stroke incident cases (whether inpatient or outpatient) that occurred during 1987-1988 and 1996 -1997 study periods were recorded and analyzed. A 95% CI was estimated for all age-and sex-specific strata. Results-During the 2 study periods, a total of 211 patients with first TIA were registered in the population studied. The crude annual TIA incidence rate per 100 000 residents was 16 (95% CI, 8 to 33) in -1988 and 29 (95% CI, 9 to 87) in 1996 -1997; these rates standardized to the European population were 17 (95% CI, 8 to 34) and 27 (95% CI, 9 to 79), respectively. Eighty-three percent of TIAs occurred in the carotid arteries (rate, 48/100 000), 10% occurred in the vertebrobasilar territory (rate, 6/100 000), and 7% of cases had a TIA of uncertain distribution (rate, 2/100 000). Conclusions-Unlike stroke incidence rate, the incidence rate of TIA in Novosibirsk is similar to that in other populationsand constitutes approximately 10% of stroke incidence. For the last decade (1987)(1988)(1989)(1990)(1991)(1992)(1993)(1994)(1995)(1996)(1997), there was a tendency, although statistically insignificant, toward increasing incidence rate of TIA in the population studied. (Stroke. 2000;31:9-13.) Key Words: epidemiology Ⅲ incidence Ⅲ stroke Ⅲ transient ischemic attack P opulation-based data on transient ischemic attack (TIA) incidence are scarce. Although incidence of TIA has been reported for numerous sites worldwide, only few incident population-based studies on TIA in all age groups of the population have been reported thus far. [1][2][3][4][5][6][7][8][9][10][11] No such data in Russia have ever been published in the international literature. However, data on TIA incidence trends are important in determining mechanisms and factors responsible for the occurrence of this disorder. Thus far only 2 truly populationbased studies 2,4 have addressed a relationship between TIA and stroke incidence rates over a period of 1 or a few decades. Herein we summarize the TIA incidence rates in Novosibirsk, Russia, for the last 10 years, from 1987-1988 to 1996 -1997, and we compare the incidence of first TIA with that of first stroke obtained in the same study population and during the same study periods. Subjects and MethodsThis prospective registry population-based study was conducted during 1987-1988 and 1996 -1997 in the general, unselected, and representative districts of Novosibirsk, Oktyabrsky District and Leninsky District. The population at risk, as determined by all-union census estimates in 1989, was 155 091 residents (85 028 women and 70 063 men) in Oktyabrsky District and...

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Section: Feigin Et Al Tia Incidence In Russia 11supporting

confidence: 92%

Section: Discussionsupporting

confidence: 78%

Section: Discussionsupporting

confidence: 72%

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A Population-Based Study of Transient Ischemic Attack Incidence in Novosibirsk, Russia, 1987–1988 and 1996–1997

Feigin¹,

Шишкин²,

Tzirkin³

et al. 2000

Stroke

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“…Other population-based TIA incidence rates range from 18 per 100,000 persons per year from 1987 to 1988 in Novosibirsk, Russia [9] to 37 per 100,000 persons per year from 1970-1973 in Estonia [10]. Data from Sweden, England, France, and Japan have also been within this range [11][12][13][14]. The higher rates in the Rochester study may reflect distinct methods of case ascertainment because incidence rates for ischemic stroke are comparable.…”

Section: Prevalence and Incidencementioning

confidence: 92%

Stroke Epidemiology: Advancing Our Understanding of Disease Mechanism and Therapy

2011

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Stroke is the fourth killer and number one cause of adult disability in the United States. The estimated direct and indirect costs of stroke care in this country are $68.9 billion for 2009. The prevalence of stroke and its cost will undoubtedly rise as the aging population increases. In addition, stroke incidence and mortality are increasing in less developed countries in which the lifestyles and population restructuring are rapidly changing. More population-based research to assess incidence, risk factors, and outcomes are needed in these countries. Epidemiologic studies can help identify groups of individuals or regions at higher risk for stroke. They can also help us better understand the natural history of certain conditions and therefore push the direction of therapeutic investigations. Furthermore, the study of trends across different time periods and different populations can help investigators evaluate the effects of stroke care programs and treatment options.

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“…All patients with dementia were followed up by the usual surveillance methods of the Hisayama study, 26 and when patients died, autopsies were performed at the Department of Pathology of Kyushu University. Brain was cut at 1-cm intervals, and specimens were taken from 14 areas of the bilateral frontal, temporal, parietal, and occipital lobes; hippocampus; basal ganglia; and thalami.…”

Section: Screening and Follow-upmentioning

confidence: 99%

Prevalence and etiology of dementia in a Japanese community.

Ueda

Kawano

Hasuo

et al. 1992

Stroke

Self Cite

189

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Background and Purpose:We sought to determine the type-specific prevalence of dementia and its risk factors in elderly persons from the Japanese community of Hisayama.Methods: We studied the prevalence of dementia in 887 Hisayama residents (353 men and 534 women) aged 65 years or older (screening rate, 94.6%) using various items of clinical information, neurological examination, and dementia scales. We also studied brain morphology in 50 of 59 determined to have dementia by computed tomography or autopsy during the subsequent 54 -month period. Factors relevant to dementia were compared between 27 patients with vascular dementia and 789 control subjects without dementia in a retrospective fashion.Results: The prevalence rate of dementia among Hisayama residents aged 65 or older was estimated at 6.7%, with a females to males ratio of 1:2. Among 50 cases of dementia in which brain morphology was examined, the frequency of vascular dementia was 56%; this rate was 2.2 times higher than that for senile dementia of the Alzheimer type. Aging, hypertension, electrocardiographic abnormalities, and high hematocrit were significantly (p<0.05) and independently associated with the occurrence of vascular dementia.Conclusions: Prevalence of dementia among the Hisayama residents was relatively identical to that previously reported, but vascular dementia was more predominant Risk factors for vascular dementia were similar to those for lacunar infarcts. Control of hypertension may be a key to reducing dementia among the Japanese population. (Stroke 1992;23:798-803) KEY WORDS • dementia • epidemiology • Japan • risk factors

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Transient cerebral ischemic attacks in a Japanese community, Hisayama, Japan.

Cited by 32 publications

References 30 publications

A Population-Based Study of Transient Ischemic Attack Incidence in Novosibirsk, Russia, 1987–1988 and 1996–1997

A Population-Based Study of Transient Ischemic Attack Incidence in Novosibirsk, Russia, 1987–1988 and 1996–1997

Stroke Epidemiology: Advancing Our Understanding of Disease Mechanism and Therapy

Prevalence and etiology of dementia in a Japanese community.

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