Estimated Prevalence of Sjogren's Syndrome in Japan : Findings from a Nationwide Epidemiological Survey

Wakai, Kenji; Tamakoshi, Akiko; Ohno, Yoshiyuki; Kawamura, Takashi; Aoki, Rie; Hashimoto, Shuji; Inaba, Yutaka; Minowa, Masumi; Aizawa, Shigeo; Miyasaka, Nobuyuki

doi:10.2188/jea.5.125

Cited by 16 publications

(8 citation statements)

References 9 publications

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“…[8][9][10][11] In the first survey, a simple questionnaire was used to inquire about the number of patients presenting with the three types of idiopathic cardiomyopathy who visited the specific departments and received treatment in 1998. Both inpatients and outpatients were surveyed, and asymptomatic patients in whom the disease was found incidentally were included.…”

Section: Methodsmentioning

confidence: 99%

“…The mean (SD) age of the patients in the three categories of cardiomyopathy was 57. 8 The estimated prevalence rates of dilated cardiomyopathy and hypertrophic cardiomyopathy by age group are presented in table 4 for each sex and for the total population of Japan. For dilated cardiomyopathy, the prevalence in men was highest at ages 60-69 (54.7 per 100 000), whereas in women it was highest at ages 70-79 (21.8 per 100 000).…”

Section: Methodsmentioning

confidence: 99%

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Epidemiology of idiopathic cardiomyopathy in Japan: results from a nationwide survey

Miura

Nakagawa²,

Morikawa³

et al. 2002

Heart

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Objective: To estimate the total number of patients with idiopathic cardiomyopathy in Japan and the prevalence of the disorder. Design: A nationwide epidemiological survey. Setting: Hospitals selected randomly from among all hospitals in Japan. Patients: Patients presenting with any of the three types of idiopathic cardiomyopathy: dilated cardiomyopathy, hypertrophic cardiomyopathy, and restrictive cardiomyopathy. Main outcome measures: The total number of patients in Japan was estimated using the sampling and response rates in each stratum with respect to hospital size. The second survey was conducted for patients reported in the first survey in order to obtain detailed information, including age, sex, and specific clinical data. Results: Estimated patient totals and 95% confidence intervals (CI) were 17 700 (95% CI 16 500 to 18 800) for dilated cardiomyopathy, 21 900 (95% CI 20 600 to 23 200) for hypertrophic cardiomyopathy, and 300 (95% CI 250 to 350) for restrictive cardiomyopathy. Crude prevalence per 100 000 population was estimated as 14.0 for dilated cardiomyopathy, 17.3 for hypertrophic cardiomyopathy, and 0.2 for restrictive cardiomyopathy; crude incidence per 100 000 person-years was estimated as 3.58, 4.14, and 0.06, respectively. Conclusions: The total number and prevalence of patients with idiopathic cardiomyopathy in Japan are estimated for the first time in a nationwide survey. The prevalence of dilated cardiomyopathy in Japan appears to be about half that of Western populations, while that of hypertrophic cardiomyopathy is about the same.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Epidemiology of idiopathic cardiomyopathy in Japan: results from a nationwide survey

Miura

Nakagawa²,

Morikawa³

et al. 2002

Heart

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“…10 In brief, estimation was based on the assumption that the mean number of patients among departments that "responded" to the survey is equal to that among departments that "did not respond". The number of patients in stratum k was estimated as:…”

Section: Methodsmentioning

confidence: 99%

Nationwide epidemiological survey of chronic pancreatitis in Japan

Lin

Tamakoshi

Matsuno

et al. 2000

Journal of Gastroenterology

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111

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The aim of this study was to estimate the number of patients treated for chronic pancreatitis in 1994 in Japan and to explore the clinico-epidemiological features of chronic pancreatitis. Two surveys were conducted. Stratified random sampling was used to select departments in which patients with chronic pancreatitis were treated, and two different questionnaires were administered to obtain relevant information. From the first survey, the total number of patients treated for chronic pancreatitis in Japan in the year 1994 was estimated as 32,000 (95% confidence interval, 25,000-39,000). Clinico-epidemiological features, based on the 2,523 patients reported from the second survey, were subsequently clarified. The sex ratio (male/female) of the patients was 3.5. Alcoholic pancreatitis was the most common type in males (68.5%), and idiopathic pancreatitis in females (69.6%). Compared with the findings in the last survey in 1985, the proportion of patients with alcoholic pancreatitis has decreased slightly, from 58.7% to 55.5%, while that of idiopathic chronic pancreatitis has increased in both males and females. Patients diagnosed by advanced techniques such as computed tomography (CT) and endoscopic retrograde cholangiopancreatography (ERCP) accounted for 68.1% of the total. The number of patients with chronic pancreatitis treated in 1994 in Japan, was estimated as 32,000, with an overall prevalence rate of 45.4 per 100,000 population in males and 12.4 per 100,000 population in females.

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“…The clinical features may involve a wide variety of organs and systems, including the nervous, musculoskeletal, genitourinary, haematological (1) and vascular systems, in approximately one-third of patients (2). The exact prevalence of pSS in the general population is not known, and a wide range of prevalence rates of pSS (from 0.026% in females to 4.8% in a geriatric population) has been reported (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15). Direct comparison of the published rates is quite difficult because of the heterogeneity of the populations studied, the multiple geographic areas, the use of different diagnostic tests for evaluation of lacrimal and salivary gland involvement, and the use of different classification criteria.…”

Section: Introductionmentioning

confidence: 99%

Prevalence of primary Sjogren’s syndrome in Turkey: a population-based epidemiological study

Bırlık

Akar

Gürler

et al. 2009

International Journal of Clinical Practice

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Estimated Prevalence of Sjogren's Syndrome in Japan : Findings from a Nationwide Epidemiological Survey

Cited by 16 publications

References 9 publications

Epidemiology of idiopathic cardiomyopathy in Japan: results from a nationwide survey

Epidemiology of idiopathic cardiomyopathy in Japan: results from a nationwide survey

Nationwide epidemiological survey of chronic pancreatitis in Japan

Prevalence of primary Sjogren’s syndrome in Turkey: a population-based epidemiological study

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