著者

Shinji Nakahara Masao Ichikawa

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

vol.23, no.1, pp.70-73, 2013-01-05 (Released:2013-01-05)

参考文献数

18

被引用文献数

37 50

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Introduction: On 11 March 2011, a magnitude 9.0 earthquake caused a huge tsunami that struck Northeast Japan, resulting in nearly 20 000 deaths. We investigated mortality patterns by age, sex, and region in the 3 most severely affected prefectures.Methods: Using police data on earthquake victims in Iwate, Miyagi, and Fukushima prefectures, mortality rates by sex, age group, and region were calculated, and regional variability in mortality rates across age groups was compared using rate ratios (RRs), with the rates in Iwate as the reference.Results: In all regions, age-specific mortality showed a tendency to increase with age; there were no sex differences. Among residents of Iwate, mortality was markedly lower among school-aged children as compared with other age groups. In northern Miyagi and the southern part of the study area, RRs were higher among school-aged children than among other age groups.Conclusions: The present study could not address the reasons for the observed mortality patterns and regional differences. To improve preparedness policies, future research should investigate the reasons for regional differences.

著者

Rumi Matsuo Naomi Matsumoto Tomoka Kadowaki Toshiharu Mitsuhashi Soshi Takao Takashi Yorifuji

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20210487, (Released:2022-01-08)

参考文献数

6

被引用文献数

1

著者

Yusuke Inoue Taketoshi Okita

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

vol.31, no.7, pp.453-455, 2021-07-05 (Released:2021-07-05)

参考文献数

15

被引用文献数

1

著者

Takaaki Ikeda Noriko Cable Masashige Saito Shihoko Koyama Taishi Tsuji Taiji Noguchi Katsunori Kondo Ken Osaka Jun Aida

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

vol.31, no.10, pp.523-529, 2021-10-05 (Released:2021-10-05)

参考文献数

39

被引用文献数

3 14

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Background: Existing evidence suggest that those who are socially isolated are at risk for taking up or continuing smoking. This study investigated country-based differences in social isolation and smoking status.Methods: We performed a repeated cross-sectional study using two waves of data from two ongoing aging studies: the English Longitudinal Study of Ageing and the Japan Gerontological Evaluation Study. Participants from both studies aged ≥65 years were included. We applied a multilevel Poisson regression model to examine the association between social isolation and smoking status and adjusted for individual sociodemographic characteristics. We used the social isolation index which comprises the following domains: marital status; frequency of contact with friends, family, and children; and participation in social activities. Interaction terms between each country and social isolation were also entered into the mode.Results: After exclusion of never smokers, we analyzed 75,905 participants (7,092 for ELSA and 68,813 for JAGES, respectively). Taking ex-smokers as the reference, social isolation was significantly associated with current smoking; the prevalence ratios (PRs) were 1.06 (95% credible interval [CrI], 1.05–1.08) for men and 1.08 (95% CrI, 1.04–1.11) for women. Taking Japan as a reference, the interaction term between country and social isolation was significant for both sexes, with increased PRs of 1.32 (95% CrI, 1.14–1.50) for men and 1.30 (95% CrI, 1.11–1.49) for women in England.Conclusions: Older people who were less socially isolated were more likely to quit smoking in England than in Japan, possibly explained by the strict tobacco control policies in England.

著者

Wei-Jie Gong Daniel Yee-Tak Fong Man-Ping Wang Tai-Hing Lam Thomas Wai-Hung Chung Sai-Yin Ho

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20210081, (Released:2021-06-19)

参考文献数

59

被引用文献数

9

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Background: Breakfast is deemed the most important meal of the day. We examined the prospective associations of breakfast habits with emotional/behavioral problems in adolescents and potential effect modification.Methods: 115,217 Primary 6 students (United States Grade 6; mean age, 11.9; standard deviation [SD], 0.59 years) who attended the Student Health Service of Department of Health in Hong Kong in 2004/05, 2006/07, 2008/09 were followed till Secondary 6 (United States Grade 12). Emotional/behavioral problems were biennially examined using Youth Self-Report since Secondary 2 (United States Grade 8). Lifestyles were biennially examined using standardized questionnaires since Primary 6. Prospective associations of breakfast habit with emotional/behavioral problems and potential effect modification were examined using generalized estimating equations.Results: Compared with eating breakfast at home, eating breakfast away from home was significantly associated with total emotional/behavioral problems and seven syndromes, including withdrawal, somatic complaints, anxiety/depression, thought problems, attention problems, delinquent behaviors, and aggressive behaviors (adjusted odds ratios [AORs] 1.22–2.04), while skipping breakfast showed stronger associations with the above problems and social problems (AORs 1.34–2.29). Stronger associations were observed in younger students for total and attention problems (P < 0.03) and in those with lower weight status for delinquent behaviors (P = 0.005).Conclusions: Eating breakfast away from home and especially skipping breakfast were prospectively associated with adolescent emotional/behavioral problems. The associations weakened with increasing age for total emotional/behavioral and attention problems, and weakened with higher weight status for delinquent behaviors, highlighting the vulnerability of younger and underweight children. If the associations are causal, increasing home breakfast may reduce adolescent emotional/behavioral problems and benefit psychosocial health.

著者

Bibha DHUNGEL Kato TSUGUHIKO Yuko KACHI Manami OCHI Stuart GILMOUR Kenji TAKEHARA

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20210273, (Released:2021-10-23)

参考文献数

59

被引用文献数

4

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Background: In Japan, ten percent of single-parent households are led by fathers. Taking care of children as a single father is very stressful and could put a strain on their health. It is very important to prevent and identify psychological distress among fathers for both their own health and to avoid negative impacts on children. This study aims to determine the prevalence of, and factors associated with psychological distress among single fathers and understand how it is different from partnered fathers.Methods: We used data from the Comprehensive Survey of Living Conditions 2016. Psychological distress, assessed using the K6 scale, was analysed among 868 single and 43,880 partnered fathers. Logistic regression analysis was performed to assess the risk factors for psychological distress such as employment type, sleep hours, smoking and drinking habits.Results: Single fathers had a higher proportion (8.5%) of psychological distress compared to partnered fathers (5.0%). A large percentage of single fathers had a lower educational level and were non-regular workers, self-employed or unemployed, compared to partnered fathers. Among single fathers, the crude and adjusted odds ratio for employment type and sleep hours were significantly associated with psychological distress.Conclusion: As single parents who are self-employed or directors are likely to have significantly reduced psychological distress than those with regular jobs, measures are needed to improve the work-family balance for non-self-employed fathers. There is a need to provide assistance to improve the quality and amount of sleep of single fathers to ensure their and their children’s good health.

著者

Rumi Kozakai Shigeki Tsuzuku Kyonosuke Yabe Fujiko Ando Naoakira Niino Hiroshi Shimokata

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

vol.10, no.1sup, pp.77-81, 2000 (Released:2007-11-30)

参考文献数

21

被引用文献数

22 25

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To prevent a decline in gait with age, it is necessary to investigate age-related changes in gait performance and detect related factors. The purpose of this study was to assess the association between gait ability and leg extension power among middle-aged and elderly people. Height, weight, maximum gait velocity (MGV) and leg extension power (LEP) were measured in 752 males and females who participated in the National Institute for Longevity Sciences, Longitudinal Study of Aging (NILS-LSA). Age-related changes in MGV and LEP and the association between MGV and LEP were assessed. There were significant decline trends in height, weight, MGV and LEP with advancing age (p<0.001). MGV showed a significantly positive correlation with LEP (in males: r=0.48 p<0.001, in females: r=0.47; p<0.001). Subjects aged 60yrs and over showed a significantly higher correlation than those under 60yrs in males, but not in females, after adjustment for height and weight. Although the relationships between MGV and LEP were different by age and gender, LEP may be one of the important factors in maintaining gait ability. J Epidemiol, 2000 ; 10 : S77-S81.

著者

Naoakira Niino Shigeki Tsuzuku Fujiko Ando Hiroshi Shimokata

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

vol.10, no.1sup, pp.90-94, 2000 (Released:2007-11-30)

参考文献数

17

被引用文献数

87 114

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Frequencies and circumstances of falls were assessed among 1030 middle-aged and elderly people who participated in the NILS-LSA (National Institute for Longevity Sciences, Longitudinal Study of Aging) from November, 1997 to March, 1999 and responded to the questionnaires. The variables analyzed in the present study were demography and history of falls in the past one year. Circumstances of falls, e.g. time, location, activities associated with falls, cause of falls and degree of injury due to falls were asked when the subjects experienced a fall. Fear of falling was also investigated in all subjects. The prevalence of falls was 12.9% in the middle-aged group (40-59yr.) and 16.5% in the elderly group (60-79yr.). The distribution of time, location, activity associated with falls, cause and injury due to falls corresponded with previous fall studies among community-dwelling elderly people. The incidence of falls was extremely high during the daytime and outdoors. Falls occurred most frequently while walking. The majority of falls were due to extrinsic factors. About 40% of all falls caused no injury. As to the fear of falling, about 30% of the middle-aged subjects and about 60% of the elderly subjects reported that they were fearful. Our results suggested that fall accidents are not rare, even in middle-aged people. J Epidemiol, 2000 ; 10 : S90-S94.

著者

Nobuyuki Katsumata Daisuke Harama Takako Toda Yuto Sunaga Masashi Yoshizawa Yosuke Kono Yohei Hasebe Keiichi Koizumi Minako Hoshiai Tomohiro Saito Sho Hokibara Koji Kobayashi Miwa Goto Tomoaki Sano Makoto Tsuruta Makoto Nakamura Sonoko Mizorogi Masanori Ohta Mie Mochizuki Hiroki Sato Hiroshi Yokomichi Takeshi Inukai

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20210132, (Released:2021-09-04)

参考文献数

42

被引用文献数

7

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Background: Kawasaki disease is suspected to be triggered by previous infection. The prevention measures for coronavirus disease 2019 (COVID-19) have reportedly reduced transmission of certain infectious diseases. Under these circumstances, the prevention measures for COVID-19 may reduce the incidence of Kawasaki disease.Methods: We conducted a retrospective study using registration datasets of patients with Kawasaki disease who were diagnosed in all 11 inpatient pediatric facilities in Yamanashi Prefecture. The eligible cases were 595 cases that were diagnosed before the COVID-19 pandemic (from January 2015 through February 2020) and 38 cases that were diagnosed during the COVID-19 pandemic (from March through November 2020). Incidence of several infectious disease were evaluated using data from the Infectious Disease Weekly Report conducted by the National Institute of Infectious Diseases.Results: Epidemics of various infectious diseases generally remained at low levels during the first 9 months (March through November 2020) of the COVID-19 pandemic. Moreover, the incidence of COVID-19 was 50–80 times lower than the incidence in European countries and the United States. The total number of 38 cases with Kawasaki disease for the 9 months during the COVID-19 pandemic was 46.3% (−3.5 standard deviations [SDs] of the average [82.0; SD, 12.7 cases] for the corresponding 9 months of the previous 5 years. None of the 38 cases was determined to be triggered by COVID-19 based on their medical histories and negative results of severe acute respiratory syndrome coronavirus 2 testing at admission.Conclusion: These observations provide a new epidemiological evidence for the notion that Kawasaki disease is triggered by major infectious diseases in children.

著者

Chushi Kuroiwa

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

vol.12, no.4, pp.341-343, 2002 (Released:2007-11-30)

参考文献数

5

被引用文献数

2 1

著者

Hiroki DEN Junichi ITO Akatsuki KOKAZE

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20210074, (Released:2021-08-12)

参考文献数

31

被引用文献数

14

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BackgroundDevelopmental dysplasia of the hip (DDH) is a cluster of hip development disorders that affects infants. The incidence of DDH-related dislocation (DDH-dislocation) is reportedly 0.1−0.3%; however, the nationwide incidence of DDH-dislocation in Japan has not been previously reported. The primary aim of this study was to report the nationwide incidence of DDH-dislocation in Japan using the National Database of Health Insurance Claims and Specific Health Checkups of Japan (NDB), and to examine its regional variation across Japan.MethodsThis was a retrospective birth cohort study using the NDB. Data on patients born between 2011 and 2013 and assigned DDH-dislocation-related disease codes during 2011−2018 were extracted. Among these, patients who underwent treatment for DDH-dislocation between 2011 and 2018 were defined as patients with DDH-dislocation.ResultsAcross the 2011, 2012, and 2013 birth cohorts, 2367 patients were diagnosed with DDH-dislocation, yielding the nationwide incidence of 0.076%. Region-specific incidence rates were almost similar across Japan. Secondary analyses revealed that 273 (11.5%) patients were diagnosed at the age of ≥1 year. The effect of birth during the cold months on the incidence of DDH-dislocation was significant (relative risk [RR]=1.89, 95% confidence interval [CI]: 1.75−2.06). The risk of DDH-dislocation among girls was approximately seven times higher than that among boys.ConclusionsThis is the first study to report the nationwide incidence of DDH-dislocation in Japan, which was estimated at 0.076%. The regional variation was trivial and unlikely to be clinically significant. Thus, the incidence rates were approximately equal across all regions in Japan.

著者

Milos Jenicek

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

vol.7, no.4, pp.187-197, 1997 (Released:2007-11-30)

参考文献数

117

被引用文献数

49 70

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Evidence-Based Medicine (EBM) is heralded as a new paradigm of medicine. Is it? What is its link to epidemiology? Does an evidence-based (EB) approach apply also to other health sciences and to public health in particular? What has epidemiology already achieved in these domains, and what remains to be done? What should our priorities be in the coming years? The EB approach is essential in all health sciences at two levels: for problem solving, and for decision making. It applies to all health sciences, be it medicine, nursing, public health, or others. Many epidemiological principles, methods and techniques are put into good use in EBM. The EB "movement" is attractive in it's use of clearly defined procedures, generalizing (not always explicitly) the application of good epidemiologic principles, methods, and techniques. Epidemiology must now contribute to the evaluation of the practice of an EB approach. If one does not have access to a good medical library nor information technology does the EBM paradigm still hold? Hence, clinical and public health guidelines will benefit first from the EBM approach, then daily practice of EBM will follow, conditions permitting. In public health, the challenges of the EB practice are not equally spread across health protection, different levels of disease prevention, and health promotion. The latter represents the most challenging task for epidemiology at any step of EB approach. Epidemiology, if successful in this domain, may help to build an EB health promotion. An Evidence-Based Public Health paradigm may be considered. J Epidemiol, 1997; 7 : 187-197.

著者

Natsu Sasaki Reiko Kuroda Kanami Tsuno Kotaro Imamura Norito Kawakami

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20200499, (Released:2020-11-07)

参考文献数

8

被引用文献数

1 13

著者

Shingo Fukuma Tatsuyoshi Ikenoue Yukari Yamada Yoshiyuki Saito Joseph Green Takeo Nakayama Shunichi Fukuhara

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

vol.31, no.7, pp.410-416, 2021-07-05 (Released:2021-07-05)

参考文献数

39

被引用文献数

3

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Background: Breaches of ethics undermine the practice of medicine. In Japan, two major scandals involving clinical research and drug marketing occurred after the publication of clinical trials. To study the effects of those scandals, we evaluated changes in the use of first-generation angiotensin II receptor blockers (ARBs) after publication of relevant clinical trials and also after the subsequent scandals.Methods: We conducted a quasi-experimental design of an interrupted time series analysis (ITSA) on nationwide monthly drug-market data covering 12 years (2005 to 2017) in Japan. The main outcome was the use of first-generation ARBs (valsartan, candesartan, and losartan). The two exposures were the publication of ARB-related clinical-trial results (October 2006) and subsequent ARB-related scandals involving research and marketing (February 2013). A generalized estimating equation model was fitted for ITSA with a log link, Poisson distribution, robust variance estimators, and seasonality adjustment.Results: The publication of clinical trials was associated with 12% increase in the use of first-generation ARBs in Japan, and the subsequent ARB-related scandals was associated with 19% decrease. The decrease in the use of first-generation ARBs after the scandals was greater than the increase in their use after the publication of clinical-trial results. The net effect of the two exposures was a 9% decrease in the use of first-generation ARBs.Conclusions: The scandals were associated with decrease in the use of first-generation ARBs, and that decrease was greater than the increase associated with the publication of “successful” clinical trials, making the net effect not zero but negative.

著者

Akiko Tamakoshi Kotaro Ozasa Yoshihisa Fujino Koji Suzuki Kiyomi Sakata Mitsuru Mori Shogo Kikuchi Hiroyasu Iso

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20120161, (Released:2013-04-13)

参考文献数

4

被引用文献数

85 111

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The Japan Collaborative Cohort Study for Evaluation of Cancer Risk (JACC Study) was established in the late 1980s to evaluate the risk impact of lifestyle factors and levels of serum components on human health. During the 20-year follow-up period, the results of the study have been published in almost 200 original articles in peer-reviewed English-language journals. However, continued follow-up of the study subjects became difficult because of the retirements of principal researchers, city mergers throughout Japan in the year 2000, and reduced funding. Thus, we decided to terminate the JACC Study follow-up at the end of 2009. As a final point of interest, we reviewed the population registry information of survivors. A total of 207 (0.19%) subjects were ineligible, leaving 110 585 eligible participants (46 395 men and 64 190 women). Moreover, errors in coding date of birth and sex were found in 356 (0.32%) and 59 (0.05%) cases, respectively, during routine follow-up and final review. Although such errors were unexpected, their impact is believed to be negligible because of the small numbers relative to the large total study population. Here, we describe the final cohort profile at the end of the JACC Study along with selected characteristics of the participants and their status at the final follow-up. Although follow-up of the JACC Study participants is finished, we will continue to analyze and publish study results.

著者

Takaki Kobayashi Yukako Tani Shiho Kino Takeo Fujiwara Katsunori Kondo Ichiro Kawachi

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20200427, (Released:2021-02-06)

参考文献数

53

被引用文献数

7

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Background: Engagement in leisure activities among older people is associated with a lower risk of mortality. However, no studies have been conducted focusing on the difference of associations with mortality risk among multiple types of leisure activities.Methods: We examined prospectively the association of engagement in leisure activities with all-cause mortality in a cohort of older Japanese adults. The Japan Gerontological Evaluation Study included 48,216 participants aged 65 years or older. During a mean follow-up period of 5.6 years, we observed 5,575 deaths (11.6%). We investigated the total number of leisure activities, as well as combinations of 25 different leisure activities with Cox proportional hazards models, adjusting for potential confounding factors.Results: We found a linear relationship between the total number of leisure activities and mortality hazard (adjusted hazard ratio, 0.93; 95% CI, 0.92–0.95). Furthermore, engagement in leisure activities involving physical activity, as well as group-based interactions, showed the strongest associations with lowered mortality. By contrast, engagement in cultural leisure activities and solitary leisure activities were not associated with all-cause mortality.Conclusions: Although we cannot rule out residual confounding, our findings suggest that encouraging engagement in physically-active group-based leisure activities may promote longevity in older adults.

著者

Noriko Fujiwara Naoki Shimada Masanori Nojima Keisuke Ariyoshi Norie Sawada Motoki Iwasaki Shoichiro Tsugane

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20210087, (Released:2021-07-03)

参考文献数

18

被引用文献数

3

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BackgroundThe place of death and related factor such as diseases, symptoms, family burden, and cost has been examined, but social background and lifestyle were not considered in most studies. Here, we assessed factors that are associated with the place of death using the largest cohort study in Japan.MethodsA total of 17,546 deaths from the cohort study were assessed. The study database was created from the Japan Public Health Center-based Prospective Study (JPHC Study) in which demographic data were collected by Japanese Vital Statistics. Adjusted odds ratios for home death were calculated by logistic regression.ResultsMultivariate analysis adjusted for various factors showed that unmarried status (OR 2.4, 95%CI:2.0-2.9), unemployed male (OR 1.3, 95%CI: 1.1-1.5), and high drinking level (OR 1.3, 95%CI:1.1-1.6) were associated with home death. Regarding the cause of death, cardiovascular disease (OR 3.3, 95%CI:2.9-3.8), cerebrovascular disease (OR 1.9, 95%CI:1.6-2.2) and external factors (OR 4.1, 95%CI:3.5-4.8) were significantly associated with home death, compared with cancer. The risk of death at home was significantly higher in unmarried status stratified by cause of death (OR: cardiovascular 3.2, 95%CI:2.2-4.7 / cerebrovascular 5.0, 95%CI:2.8-8.9 / respiratory 3.4, 95%CI:1.6-7.6/ external 2.3, 95%CI:1.4-3.7), but for cancer, the risk of death at home tended to be higher in married status.ConclusionsThis study indicated that various factors are associated with home death using the largest cohort study in Japan. There is a high possibility of home deaths in people with fewer social connections and in those with diseases leading to sudden death.

著者

Sangjeong Ahn Gi Jeong Kim Sung-Im Do Kyungeun Kim Hyunjoo Lee In-Gu Do Dong-Hoon Kim Seoung Wan Chae Seungho Ryu Jin Hee Sohn

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20200142, (Released:2021-02-02)

参考文献数

57

被引用文献数

1

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Background: Inflammation is emerging as a potential mechanism of cervical carcinogenesis. However, few studies have investigated the association between host inflammatory status and the natural course of cervical precursor lesion. The aim of this study was to assess the probability of LSIL regression, associated with an inflammatory biomarker, high-sensitivity C-reactive protein (hs-CRP).Methods: In a longitudinal cohort study, female participants were examined annually or biannually using cervical cytology between 2006 and 2015. Incident LSIL cases were included in the analysis, with regression defined as at least one consecutive normal cytologic result. A total of 520 women aged 22–64 years were followed up for LSIL regression. The multivariable-adjusted hazard ratios (HRs) for LSIL regression were estimated using a parametric proportional hazards model.Results: During 827.5 person-years of follow-up, 486 out of 520 subjects (93.5%) showed LSIL regression. After adjusting several important potential confounders, a higher quartile of hs-CRP levels was significantly associated with a lower rate of regression (for quartile 4 vs quartile 1, inverse HR 1.33; 95% CI, 1.04–1.69; P for trend = 0.028).Conclusions: The low rate of spontaneous regression recorded in women with higher hs-CRP lends support to the role of the perturbated host inflammatory status in cervical carcinogenesis, and suggests that hs-CRP level could help monitor LSIL.

著者

Masako Shimoda Kayo Kaneko Takeshi Nakagawa Naoko Kawano Rei Otsuka Atsuhiko Ota Hisao Naito Masaaki Matsunaga Naohiro Ichino Hiroya Yamada Chifa Chiang Yoshihisa Hirakawa Koji Tamakoshi Atsuko Aoyama Hiroshi Yatsuya

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20210128, (Released:2021-05-22)

参考文献数

33

被引用文献数

2

---

Background: There is limited evidence regarding the relationship between Diabetes mellitus (DM) in middle age and mild cognitive impairment after a follow-up. Therefore, we investigated the relationship between fasting blood glucose (FBG) levels in middle age and cognitive function (assessed using the Japanese version of the Montreal Cognitive Assessment (MoCA-J) in later life, following over 15 years of follow-up in the Aichi Workers’ Cohort Study in Japan.Methods: Participants were 253 former local government employees aged 60–79 years in 2018 who participated in a baseline survey conducted in 2002. Using baseline FBG levels and self-reported history, participants were classified into the normal, impaired fasting glucose (IFG) and, and DM groups. Total MoCA-J score ranges from 0 to 30, and cognitive impairment was defined as MoCA-J score ≤25 in this study. A general linear model was used to estimate the mean MoCA-J scores in the FBG groups, adjusted for age, sex, educational year, smoking status, alcohol consumption, physical activity, body mass index, systolic blood pressure, total cholesterol, and estimated glomerular filtration rate.Results: The mean MoCA-J score in the total population was 25.0, and the prevalence of MoCA-J score ≤25 was 49.0%. Multivariable-adjusted total MoCA-J scores were 25.2, 24.8, and 23.4 in the normal, IFG, and DM groups, respectively. The odds ratio of MoCA-J score ≤25 in the DM group was 3.29.Conclusions: FBG level in middle age was negatively associated with total MoCA-J scores assessed later in life, independent of confounding variables.

著者

Shunsuke Murata Misa Takegami Daisuke Onozuka Yuriko Nakaoku Akihito Hagihara Kunihiro Nishimura

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

vol.31, no.6, pp.361-368, 2021-06-05 (Released:2021-06-05)

参考文献数

19

被引用文献数

5

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Background: Dementia-related missing and subsequent deaths are becoming serious problems with increases in people with dementia. However, there are no sufficient studies investigating the incidence rate, the mortality rate, and their risk factors.Methods: An ecological study aggregated at the Japanese prefectural level was conducted. Dementia-related missing persons cases and deaths in 2018 were extracted from the statistics of the National Police Agency in Japan. We extracted variables about older adults’ characteristics, care, and safety as candidate variables considered to be relevant to dementia-related missing persons cases and deaths. Associations of the candidate variables with the incidence and mortality rates were analyzed using the generalized linear model (family: quasi-poisson, link: log) adjusted for confounding factors (proportion of older adults and gross prefectural product).Results: The incidence rate and mortality rate per 100,000 person-year was 21.72 and 0.652 in Japan, respectively. One facility increase in the number of nursing care facilities for older adults per 100,000 persons aged 65-years-old or more was associated with a 7.9% (95% confidence interval [CI], 3.3–12.4%) decrease in the incidence rate. One increase in the number of public health nurses per 100,000 persons was associated with a 3.2% (95% CI, 1.6–4.9%) decrease in the incidence rate. A ten percent increase in the proportion of people who live in an urban area was associated with a 20.3% (95% CI, 8.7–33.2%) increase in the incidence rate and a 12.9% (95% CI, 5.6–19.8%) decrease in the mortality rate.Conclusions: Identified associated factors may be useful for managing or predicting dementia-related missing persons cases and associated deaths.