著者

Kaori Sakurada Tsuneo Konta Masafumi Watanabe Kenichi Ishizawa Yoshiyuki Ueno Hidetoshi Yamashita Takamasa Kayama

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20180249, (Released:2019-04-06)

参考文献数

23

被引用文献数

30

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Background: Positive and negative psychological factors are associated with mortality and cardiovascular disease. This study prospectively investigated associations between daily frequency of laughter, and mortality and cardiovascular disease in a community-based population.Methods: This study included 17,152 subjects ≥40 years old who participated in an annual health check in Yamagata Prefecture. Self-reported daily frequency of laughter was grouped into 3 categories (≥1/week; ≥1/month but <1/week; <1/month). Associations between daily frequency of laughter and increase in all-cause mortality and cardiovascular disease incidence were determined using Cox proportional hazards modeling.Results: During follow-up (median, 5.4 years), 257 subjects died and 138 subjects experienced cardiovascular events. Kaplan-Meier analysis revealed that all-cause mortality and cardiovascular disease incidence were significantly higher among subjects with a low frequency of laughter (log-rank P<0.01). Cox proportional hazard model analysis adjusted for age, gender, hypertension, smoking, and alcohol drinking status showed that risk of all-cause mortality was significantly higher in subjects who laughed <1/month than in subjects who laughed ≥1/week (hazard ratio (HR) 1.95, 95% confidence interval (CI), 1.16-3.09). Similarly, risk of cardiovascular events was higher in subjects who laughed ≥1/month but < 1/week than in subjects who laughed ≥1/week (HR 1.62, 95% CI, 1.07-2.40).Conclusion: Daily frequency of laughter represents an independent risk factor for all-cause mortality and cardiovascular disease in a Japanese general population.

著者

Yuya ASHITOMI Tsuneo KONTA Fuyuhiko MOTOI Masahumi WATANABE Takamasa KAYAMA Yoshiyuki UENO

出版者

Center for Academic Publications Japan

雑誌

Journal of Nutritional Science and Vitaminology (ISSN:03014800)

巻号頁・発行日

vol.68, no.4, pp.270-275, 2022-08-31 (Released:2022-08-31)

参考文献数

32

被引用文献数

1

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The element magnesium (Mg) is involved in various metabolic reactions within the human body, and its deficiency is considered a risk factor for several diseases. In this study, we investigated the relationship between serum Mg levels and mortality in a community-based population. We prospectively assessed the association between serum Mg levels at enrollment and all-cause mortality in 1,314 participants who underwent a community health examination. The mean serum Mg level was 2.4 (±0.2) mg/dL. Patients with serum Mg levels ≤2.3 mg/dL constituted the low Mg group, while those with serum Mg ≥2.4 mg/dL constituted the high Mg group. Ninety-three (7.1%) patients died during the 10-y follow-up period. Kaplan-Meier analysis revealed that all-cause mortality was significantly higher in the low Mg group (log-rank p<0.05). Cox proportional hazards analysis revealed a significant association in the unadjusted model (hazard ratio [HR] 1.72, 95% confidence intervals [CI] 1.14–2.58, p<0.01) and in the fully adjusted model (HR 1.73, 95% CI 1.09–2.76, p<0.05). This association was particularly strong in males (HR 2.08, 95% CI 1.19–3.63, p<0.05). Low serum Mg levels were significantly associated with the risk of all-cause mortality among males in a community-based Japanese population.

著者

Hidenobu Okuyama Osamu Hirono Harutoshi Tamura Satoshi Nishiyama Yasuchika Takeishi Takamasa Kayama Isao Kubota

出版者

日本循環器学会

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

vol.72, no.11, pp.1914-1914, 2008 (Released:2008-10-24)

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The Editorial Team of Circulation Journal has recently confirmed that the paper written by Hidenobu Okuyama et al, published in the August 2008 issue of the Journal (Circ J 2008; 72: 1296 - 1302), contains serious plagiarism from the paper by Kenichi Sugioka et al, published in the April 2002 issue of Stroke (Stroke 2002; 33: 2077 - 2081). Therefore, we have had to take the decision to retract the offending paper from Circulation Journal. Hidenobu Okuyama, Osamu Hirono, Harutoshi Tamura, Satoshi Nishiyama, Yasuchika Takeishi, Takamasa Kayama, Isao Kubota. Impact of Aortic Arch Stiffness on Recurrence of Stroke in Patients With Acute Ischemic Stroke (Circ J 2008; 72: 1296 - 1302) As the Editor-in-Chief, I deeply regret that such misconduct has happened in our Journal, and would like to express the sincere hope and determination that it will never happen again in the future.

著者

Yoshie Hose Junko Ishihara Ayaka Kotemori Misako Nakadate Sachiko Maruya Junta Tanaka Hiroshi Yatsuya Atsuko Aoyama Chifa Chiang Tsuneo Konta Takamasa Kayama Yoshiyuki Ueno Manami Inoue Norie Sawada Shoichiro Tsugane Ribeka Takachi

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

vol.33, no.8, pp.419-427, 2023-08-05 (Released:2023-08-05)

参考文献数

25

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Background: Recent innovations in information and communication technology have made it possible to assess diet using web-based methods; however, their applicability in the general population remains unclear. Hence, we aimed to examine the applicability of a web-based 24-hour dietary recall (24HR) tool to large-scale epidemiological studies by determining the sampling rate and characteristics of randomly selected participants from a Japanese cohort study.Methods: In total, 5,013 individuals were recruited from a cohort of 21,537 individuals, and 975 agreed to participate in this study. The participants selected either self-administered web-based dietary 24HR (self-administered 24HR) or interviewer-administered telephone-based 24HR (interviewer-administered 24HR) as the method for the dietary assessment and answered questions regarding the acceptability of the system.Results: The response rate of the 975 participants was 19.4%, corresponding to approximately 4.5% of the total study sample. About half of them chose the self-administered 24HR (46.9%). The median time required for the self-administered and interviewer-administered 24HR was 25 and 27 minutes, respectively. In the self-administered 24HR, older people, regardless of sex, tended to require a longer time, and approximately 60% of the participants rated the ease of use of the system as “somewhat difficult” or “difficult.”Conclusion: Characteristics of the participants in this study were not systemically different from those of the entire study sample. Improvements in the approach to entering cooking details and the dish name selection may be necessary for better acceptability in order to be accepted as a self-administered dietary recall tool.

著者

Kaori Sakurada Tsuneo Konta Masafumi Watanabe Kenichi Ishizawa Yoshiyuki Ueno Hidetoshi Yamashita Takamasa Kayama

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

vol.30, no.4, pp.188-193, 2020-04-05 (Released:2020-04-05)

参考文献数

23

被引用文献数

30

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Background: Positive and negative psychological factors are associated with mortality and cardiovascular disease. This study prospectively investigated associations of daily frequency of laughter with mortality and cardiovascular disease in a community-based population.Methods: This study included 17,152 subjects ≥40 years old who participated in an annual health check in Yamagata Prefecture. Self-reported daily frequency of laughter was grouped into three categories (≥1/week; ≥1/month but <1/week; <1/month). Associations of daily frequency of laughter with increase in all-cause mortality and cardiovascular disease incidence were determined using Cox proportional hazards modeling.Results: During follow-up (median, 5.4 years), 257 subjects died and 138 subjects experienced cardiovascular events. Kaplan-Meier analysis revealed that all-cause mortality and cardiovascular disease incidence were significantly higher among subjects with a low frequency of laughter (log-rank P < 0.01). Cox proportional hazard model analysis adjusted for age, gender, hypertension, smoking, and alcohol drinking status showed that risk of all-cause mortality was significantly higher in subjects who laughed <1/month than in subjects who laughed ≥1/week (hazard ratio [HR] 1.95; 95% confidence interval [CI], 1.16–3.09). Similarly, risk of cardiovascular events was higher in subjects who laughed ≥1/month but <1/week than in subjects who laughed ≥1/week (HR 1.62; 95% CI, 1.07–2.40).Conclusion: Daily frequency of laughter represents an independent risk factor for all-cause mortality and cardiovascular disease in a Japanese general population.

著者

Takamasa KAYAMA

出版者

社団法人 日本脳神経外科学会

雑誌

Neurologia medico-chirurgica (ISSN:04708105)

巻号頁・発行日

vol.52, no.3, pp.119-141, 2012 (Released:2012-03-16)

参考文献数

86

被引用文献数

17 78

著者

Takaaki HOSOYA Jun HATAZAWA Shinya SATO Masafumi KANOTO Akira FUKAO Takamasa KAYAMA

出版者

社団法人 日本脳神経外科学会

雑誌

Neurologia medico-chirurgica (ISSN:04708105)

巻号頁・発行日

vol.53, no.4, pp.207-212, 2013 (Released:2013-04-25)

参考文献数

23

被引用文献数

1 13

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We would like to propose floating dural sac sign, which is observed as a hyperintense band or rim around the spinal dural sac on axial T2-weighted images, as a sensitive sign to identify cerebrospinal fluid (CSF) leakage. One hundred patients with orthostatic headache were prospectively registered in 11 hospitals. These patients were examined by brain magnetic resonance (MR) imaging (n = 89), radioisotope cisternography (n = 89), MR myelography (n = 86), axial T2-weighted imaging of the spine (n = 70), and computed tomography myelography (n = 2). In this study, we separately evaluated the imaging findings of intracranial hypotension and spinal CSF leakage. Among 100 patients, 16 patients were diagnosed as having spinal CSF leaks. Of 70 patients examined with axial T2-weighted imaging, 14 patients were diagnosed with spinal CSF leaks, and floating dural sac sign was observed in 17 patients, 13 patients with spinal CSF leaks and 4 without CSF leaks (sensitivity 92.9%, specificity 92.9%). Of 86 patients examined by MR myelography, extradural fluid was observed in only 3 patients (sensitivity 21.4%, specificity 100%). The floating dural sac sign was a sensitive sign that can be used to identify CSF leakage. Spinal axial T2-weighted imaging might be a good screening method for spinal CSF leakage that can help to avoid the need for lumbar puncture.