文献一覧: Takeo Fujiwara (著者)

10 0 0 0 OA Combined Effect of Marriage and Education on Mortality: A Cross-national Study of Older Japanese and Finnish Men and Women

著者: Tami Saito Tuula Oksanen Kokoro Shirai Takeo Fujiwara Jaana Pentti Jussi Vahtera
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: pp.JE20190061, (Released:2019-09-07)
参考文献数: 36
被引用文献数: 3

Background: While marriage and education help maintain older adults’ health, their joint association with mortality remains unclear. This cross-national study examined the combined effect of marriage and education on the mortality of older Japanese and Finnish adults.Methods: Data on 22,415 Japanese and 11,993 Finnish adults, aged 65–74 years, were obtained from the Japan Gerontological Evaluation Study of 2010–2012 and the Finnish Public Sector Study of 2008–2009 and 2012–2013. We followed up on respondents’ survival status for 5 years using public records. Marital status, educational level, and other variables in both datasets were harmonized.Results: The Cox proportional hazards model showed that unmarried men had a higher mortality risk than married men in both countries (hazard ratio [HR] 1.47; 95% confidence interval [CI], 1.21–1.79 for Japanese and HR 1.94; 95% CI, 1.29–2.91 for Finnish); no such difference was observed in women. The highest mortality risk was observed in unmarried men with tertiary education in both Japan (HR 1.85; 95% CI, 1.21–2.83) and Finland (HR 2.21; 95% CI, 1.26–3.89), when adjusted for baseline age, health-related behaviors, and illnesses.Conclusions: Our findings showed similarity in the combined effect of marriage and education between Japan and Finland, differing from observations in countries with more apparent socioeconomic health disparities. Further studies should examine the reasons for the excessive mortality risk in highly educated, unmarried men in both countries and consider whether selection bias led to underestimation of the true risk in unmarried older adults with lower education.

2020-08-13 12:22:36
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4 0 0 0 OA Being Left Alone at Home and Dental Caries of Children Aged 6–7 Years

著者: Yusuke Matsuyama Aya Isumi Satomi Doi Takeo Fujiwara
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: pp.JE20210321, (Released:2021-10-30)
参考文献数: 31
被引用文献数: 1

Background: Leaving children alone at home is considered child neglect in some countries but is not prohibited in Japan. We investigated the association between being left alone at home and dental caries of children aged 6–7 years in Japan.Methods: The data on first graders in all 69 public elementary schools in Adachi, Tokyo, obtained from repeated cross-sectional surveys in 2015, 2017, and 2019 were analyzed. Caregivers answered the questionnaire, and the data were linked to the information on children’s dental caries evaluated in school dental health checkups (N = 12,029). Poisson regression analysis with propensity score matching (PSM) was applied to account for confounders.Results: Leaving children alone at home for ≥1 hour during the weekdays was reported by 46.4% of the caregivers, which did not vary across years. The PSM analysis showed that, compared with children never being left alone at home, children being left alone at home for ≥1 time per week had more dental caries (mean ratio [MR] 1.11; 95% confidence interval (CI), 1.02–1.21; P = 0.016), while <1 time per week was not associated (MR 0.97; 95% CI, 0.92–1.03; P = 0.345). The difference between those being left alone at home for <1 time per week and those being left alone for ≥1 time per week was not significant after applying Bonferroni correction (MR 1.12; 95% CI, 1.00–1.26; P = 0.041).Conclusion: Leaving children alone at home for ≥1 hour every week might be a risk factor for dental caries of children aged 6–7 years.

2023-06-13 10:39:59
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4 0 0 0 OA Estimation of the Total Number of SARS-CoV-2-infected Individuals and the Necessary Tests and Cost During the First Wave of the COVID-19 Pandemic in Japan

著者: Nobutoshi Nawa Daiki Tebi Jin Kuramochi Takeo Fujiwara
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: pp.JE20210197, (Released:2021-08-12)
参考文献数: 12

2021-09-09 21:05:27
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2 0 0 0 OA Number of Siblings and Social Capital Among Parents Rearing Schoolchildren: Results From the A-CHILD Study

著者: Yukako Tani Aya Isumi Satomi Doi Takeo Fujiwara
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: pp.JE20210510, (Released:2022-05-28)
参考文献数: 28

Background: Having siblings may foster sociality; however, little is known about whether sibling number determines social capital, the resources obtained through social networks. We examined the association between sibling number and social capital among Japanese parents rearing schoolchildren.Methods: We used cross-sectional data from the 2018 and 2019 Adachi Child Health Impact of Living Difficulty (A-CHILD) study, targeting all primary and junior high school students and their parents in Adachi, Tokyo, Japan (n = 8,082). Individual-level social capital was evaluated by assessing caregivers’ social cohesion, social support, and group affiliation. All analyses were adjusted for age and sex.Results: An inverse U-shaped association was found between sibling number and social capital. Adults who grew up with one or two, but not three or more siblings had greater social support (coefficient = 0.23; 95% confidence interval [CI], 0.06–0.40 and coefficient = 0.46; 95% CI, 0.29–0.64, respectively) than those who grew up as an only child, after covariate adjustment. Adults who grew up with two or three, but not one or four or more siblings had greater group affiliation (coefficient = 0.09; 95% CI, 0.03–0.16 and coefficient = 0.09; 95% CI, 0.01–0.18, respectively) than those who grew up as an only child, after covariate adjustment. Sibling number was not associated with social cohesion.Conclusion: Growing up with one to three siblings was associated with higher social capital in adulthood than being an only child. Having siblings may provide an opportunity to foster social capital.

2024-01-06 16:00:02
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2 0 0 0 OA Incidence and age distribution of hospitalized presumptive and possible abusive head trauma of children under 12 months old in Japan

著者: Yui Yamaoka Takeo Fujiwara Yoshihisa Fujino Shinya Matsuda Kiyohide Fushimi
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: pp.JE20180094, (Released:2019-02-02)
参考文献数: 34
被引用文献数: 20

Background: Abusive head trauma (AHT) is the leading cause of fatal maltreatment among young children. The incidence of AHT in Japan, however, remains unknown. This study examined the incidence and distribution of age in months among young children under 12 months old hospitalized with intracranial injury in Japan.Methods: We conducted multicenter cross-sectional study for children under 36 months old admitted with intracranial injury to hospitals that employed the Diagnostic Procedure Combination (DPC) payment system between 2010 and 2013. Presumptive and possible AHT were defined by the combination of ICD-10 codes modified from the coding system recommended by the US Centers for Disease Control and Prevention.Results: The average incidence was 7.2 (95% confidence interval [CI]: 7.18-7.26) for presumptive and 41.7 (95% CI: 41.7-41.8) for possible AHT per 100,000 children less than 12 months old from 2010 to 2013. The distributions of age in months for both presumptive AHT and possible AHT had peaks at around two and eight months.Conclusions: This is the first study to report the incidence of hospitalized children with presumptive and possible AHT using population-based data. Further datasets are needed to evaluate the incidence and specific preventive strategies to prevent AHT in infants during the months of highest risk.

2019-06-11 11:00:11
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1 0 0 0 OA Prospective Study of Engagement in Leisure Activities and All-Cause Mortality Among Older Japanese Adults

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: vol.32, no.6, pp.245-253, 2022-06-05 (Released:2022-06-05)
参考文献数: 53
被引用文献数: 2 7

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.Conclusion: 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.

2023-04-28 12:04:03
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1 0 0 0 OA Objectively Measured Intensity-specific Physical Activity and Hippocampal Volume Among Community-dwelling Older Adults

著者: Masaki Machida Tomoko Takamiya Shiho Amagasa Hiroshi Murayama Takeo Fujiwara Yuko Odagiri Hiroyuki Kikuchi Noritoshi Fukushima Mitsuo Kouno Yu Saito Fumitoshi Yoshimine Shigeru Inoue Yugo Shobugawa
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: vol.32, no.11, pp.489-495, 2022-11-05 (Released:2022-11-05)
参考文献数: 43
被引用文献数: 7 9

Background: The hippocampus is a brain structure important for memory and cognitive function. Physical activity may help prevent hippocampal atrophy. However, few studies have measured sedentary behavior (SB) and intensity-specific physical activity using an accelerometer. This study aimed to examine the cross-sectional associations of objectively-determined SB, light-intensity physical activity (LPA), and moderate-to-vigorous physical activity (MVPA) measured by an accelerometer with hippocampal volume among community-dwelling older adults using compositional data analysis (CoDa) approach.Methods: This cross-sectional study was part of the Neuron to Environmental Impact across Generations (NEIGE) study. A randomly recruited sample of 485 Japanese older adults (47% male; aged 65–84 years) wore tri-axial accelerometers (Omron Healthcare) for 7 consecutive days in 2017. Hippocampal volume was measured with magnetic resonance imaging and the left and right hippocampal volumes were automatically segmented using FreeSurfer software. Associations of sedentary and physically active behaviors with hippocampal volume were examined with compositional linear regression analysis based on isometric log-ratio transformations of time use adjusted for potential confounding factors.Results: The relative proportion of time spent in MVPA, compared to the other two activities, was significantly positively associated with right hippocampal volume (β: 57.1, P-value = 0.027). However, no association existed between higher proportions of MVPA and left hippocampal volume, or between proportions of SB or LPA with either left or right hippocampal volumes.Conclusion: The proportion of time spent in MVPA, relative to the other two activities, was significantly positively associated with right hippocampal volume. MVPA may be beneficial for maintaining hippocampal volume.

2022-12-29 16:00:03
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1 0 0 0 OA Association Between Procrastination in Childhood and the Number of Remaining Teeth in Japanese Older Adults

著者: Moemi Shimamura Yusuke Matsuyama Ayako Morita Takeo Fujiwara
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: vol.32, no.10, pp.464-468, 2022-10-05 (Released:2022-10-05)
参考文献数: 34
被引用文献数: 1 3

Background: Procrastination is associated with stress and unhealthy behaviors. The oral condition reflects the long-term history of an individual’s stress exposure and oral health behaviors; however, empirical studies on the association of procrastination in childhood with remaining teeth in older age are limited. We investigated the association of procrastination in childhood with the number of remaining teeth among community-dwelling older Japanese adults.Methods: In total, 1,616 community-dwelling senior residents of Wakuya City (Miyagi Prefecture, Japan) who were enrolled in the National Health Plan & the Medical Care System for the Elderly completed a self-administered questionnaire on the number of teeth. Procrastination was measured using a single binary question about timing of holiday homework completion in childhood. The number of remaining teeth was assessed via a questionnaire with response options of ≥20, 10–19, 1–9, and 0 teeth. Ordered logistic regression models with potential confounders (sex, age, maternal education, childhood socioeconomic status [SES], childhood maltreatment, conscientiousness trait) and mediators (adulthood SES, smoking history, alcohol use history) were estimated.Results: Forty-six percent of participants reported a higher tendency to procrastinate in childhood. The proportions of participants with ≥20, 10–19, 1–9, and 0 teeth were 39.6%, 22.7%, 24.0%, and 13.7%, respectively. After adjusting for all covariates, a higher tendency to procrastinate in childhood was significantly associated with having fewer remaining teeth (odds ratio 1.28; 95% confidence interval, 1.05–1.57).Conclusion: A higher tendency to procrastinate in childhood was associated with having fewer remaining teeth in later life.

2022-12-29 12:00:07
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1 0 0 0 OA The Prevalence of COVID-19 Vaccination and Vaccine Hesitancy in Pregnant Women: An Internet-based Cross-sectional Study in Japan

著者: Yoshihiko Hosokawa Sumiyo Okawa Ai Hori Naho Morisaki Yoko Takahashi Takeo Fujiwara Shoji F. Nakayama Hiromi Hamada Toyomi Satoh Takahiro Tabuchi
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: vol.32, no.4, pp.188-194, 2022-04-05 (Released:2022-04-05)
参考文献数: 31
被引用文献数: 45

Background: Reluctance of people to receive recommended vaccines is a growing concern, as distribution of vaccines is considered critical to ending the COVID-19 pandemic. There is little information regarding pregnant women’s views toward coronavirus vaccination in Japan. Therefore, we investigated the vaccination rate and reasons for vaccination and vaccine hesitancy among pregnant women in Japan.Methods: We conducted a cross-sectional study involving 1,791 pregnant women using data from the Japan “COVID-19 and Society” Internet Survey, conducted from July to August 2021, and valid response from 1,621 respondents were analyzed. We defined participants with vaccine hesitancy as those who identified with the statement “I do not want to be vaccinated” or “I want to ‘wait and see’ before getting vaccinated.” Multivariate Poisson regression analysis was used to investigate the factors contributing to vaccine hesitancy.Results: The prevalence of vaccination and vaccine hesitancy among pregnant women was 13.4% (n = 217) and 50.9% (n = 825), respectively. The main reasons for hesitancy were concerns about adverse reactions and negative effects on the fetus and breastfeeding. Vaccine hesitancy was significantly associated with the lack of trust in the government (adjusted prevalence ratio, 1.26; 95% confidence interval, 1.03–1.54). Other factors, such as age, educational attainment, and state of emergency declaration, were not associated with vaccine hesitancy.Conclusions: COVID-19 vaccination is not widespread among pregnant women in Japan, although many vaccines have been shown to be safe in pregnancy. Accurate information dissemination and boosting trust in the government may be important to address vaccine hesitancy among pregnant women.

2022-12-26 13:00:04
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1 0 0 0 OA Response to the Letter to the Editor on “Comparison of Disease Patterns and Outcomes Between Non-Japanese and Japanese Patients at a Single Tertiary Emergency Care Center in Japan”

著者: Euma Ishii Nobutoshi Nawa Hiroki Matsui Yasuhiro Otomo Takeo Fujiwara
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: vol.32, no.2, pp.114, 2022-02-05 (Released:2022-02-05)
参考文献数: 3

2022-12-25 12:00:05
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1 0 0 0 OA Comparison of Disease Patterns and Outcomes Between Non-Japanese and Japanese Patients at a Single Tertiary Emergency Care Center in Japan

著者: Euma Ishii Nobutoshi Nawa Hiroki Matsui Yasuhiro Otomo Takeo Fujiwara
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: vol.32, no.2, pp.80-88, 2022-02-05 (Released:2022-02-05)
参考文献数: 52
被引用文献数: 2 7

Background: Japan’s historically low immigration rate and monolingual culture makes it a particularly interesting setting for clarifying non-national medical care. Our study objective was to examine disease patterns and outcome differences between Japanese and non-Japanese patients in a rapidly globalizing nation.Methods: A secondary data analysis of 325 non-Japanese and 13,370 Japanese patients requiring tertiary care or intensive-care unit or high-care unit admission to the emergency department at the Tokyo Medical and Dental University medical hospital from 2010 through 2019 was conducted. Multivariable linear and logistic regressions models were applied to examine differences in percentage of diagnosis, mortality rates, and length of stay, stratified by Glasgow Coma Scale (GCS) scores to consider the impact of language barriers. Sex and age were adjusted.Results: Non-Japanese patients had more anaphylaxis, burns, and infectious disease, but less cardiovascular diagnoses prior to adjustment. After adjustment, there were significantly more anaphylaxis (adjusted odds ratio [aOR] 2.7; 95% confidence interval [CI], 1.7–4.4) and infectious disease diagnoses (aOR 2.2; 95% CI, 1.3–3.7), and marginally more burn diagnoses (aOR 2.3; 95% CI, 0.96–5.3) than Japanese patients. Regardless of GCS scores, there were no significant differences between non-Japanese and Japanese patient length of stay for anaphylaxis, burn, and infectious disease after covariate adjustment.Conclusion: There were more non-Japanese patients diagnosed with anaphylaxis, burns, and infectious disease, but no notable patient care differences for length of stay. Further prevention efforts are needed against anaphylaxis, burns, and infectious disease for non-Japanese tourists or residents.

2022-12-24 20:00:06
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1 0 0 0 OA Online Peer Support and Well-being of Mothers and Children: Systematic Scoping Review

著者: Ai Yamashita Aya Isumi Takeo Fujiwara
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: vol.32, no.2, pp.61-68, 2022-02-05 (Released:2022-02-05)
参考文献数: 36
被引用文献数: 8

Background: Online peer support groups are common and can be an effective tool for mothers with young children. The purpose of this review is to examine the types of support that online-based peer groups establish, as well as its health effects on mothers and their children.Methods: Systematic scoping review. Systematic review of existing literature was conducted using PubMed, CINAHL, Medline, Cochrane and Ichushi (Japanese language) database in December 2019.Results: Based on the inclusion and exclusion criteria, a total of 1,475 articles were extracted by initial search. After the review of titles, abstracts and full texts, a total of 21 articles met the inclusion criteria. The types of support mothers received were mainly informational and emotional support. Mothers also felt a sense of connection and community. Some health effects of online-based peer support group were seen in the area of mothers’ mental well-being. Minimal effects were seen in behavioral modification for child nutrition and breastfeeding.Conclusion: Due to the limited evidence in interventional studies, the effects of online-based peer support groups were inconclusive. Further studies with rigorous research designs would be helpful in future research.

2022-12-24 18:00:04
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1 0 0 0 OA Prospective Study of Engagement in Leisure Activities and All-Cause Mortality Among Older Japanese Adults

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

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.

2021-07-13 18:26:26
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1 0 0 0 OA Association between procrastination in childhood and the number of remaining teeth in Japanese older adults

著者: Moemi Shimamura Yusuke Matsuyama Ayako Morita Takeo Fujiwara
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: pp.JE20200366, (Released:2021-04-10)
参考文献数: 34
被引用文献数: 3

Background: Procrastination is associated with stress and unhealthy behaviors. The oral condition reflects the long-term history of an individual’s stress exposure and oral health behaviors; however, empirical studies on the association of procrastination in childhood with remaining teeth in older age are limited. We investigated the association of procrastination in childhood with the number of remaining teeth among community-dwelling older Japanese adults.Methods: In total, 1616 community-dwelling senior residents of Wakuya City (Miyagi Prefecture, Japan) who were enrolled in the National Health Plan & the Medical Care System for the Elderly completed a self-administered questionnaire on the number of teeth. Procrastination was measured using a single binary question about timing of holiday homework completion in childhood. The number of remaining teeth was assessed via a questionnaire with response options of ≥20, 10–19, 1–9, and 0 teeth. Ordered logistic regression models with potential confounders (sex, age, maternal education, childhood socioeconomic status (SES), childhood maltreatment, conscientiousness trait) and mediators (adulthood SES, smoking history, alcohol use history) were estimated.Results: Forty-six percent of participants reported a higher tendency to procrastinate in childhood. The proportions of participants with ≥20, 10–19, 1–9, and 0 teeth were 39.6, 22.7, 24.0, and 13.7%, respectively. After adjusting for all covariates, a higher tendency to procrastinate in childhood was significantly associated with having fewer remaining teeth (odds ratio = 1.28; 95% confidence interval = 1.05–1.57).Conclusion: A higher tendency to procrastinate in childhood was associated with having fewer remaining teeth in later life.

2021-05-25 11:17:36
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1 0 0 0 OA Gender Difference in the Association Between Subjective Socioeconomic Mobility Across Life Course and Mortality at Older Ages: Results From the JAGES Longitudinal Study

著者: Yuiko Nagamine Takeo Fujiwara Yukako Tani Hiroshi Murayama Takahiro Tabuchi Katsunori Kondo Ichiro Kawachi
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: vol.30, no.11, pp.497-502, 2020-11-05 (Released:2020-11-05)
参考文献数: 36
被引用文献数: 8

Background: Socioeconomic mobility affects health throughout the life course. However, it is not known whether there are gender differences in the association between life-course subjective socioeconomic status (SSS) mobility and mortality at older ages.Methods: Participants were 16,690 community-dwelling adults aged 65–100 years in the Japan Gerontological Evaluation Study (JAGES). Baseline information including demographic characteristics, depression, and lifestyle factors were collected in 2010. Participants’ vital status was confirmed in 2013 via linkage to death records. We categorized life-course socioeconomic mobility into the following categories: ‘persistently high’, ‘downward mobility’, ‘upward mobility’, and ‘persistently low’. Cox proportional hazard modeling was used to estimate hazard ratios (HR) for all-cause mortality.Results: Mortality HRs for the ‘downward’ group were 1.37 (95% confidence interval [CI], 1.08–1.74) among men and 1.27 (95% CI, 0.94–1.71) among women in comparison with the ‘persistently high’ group. Compared to the ‘persistently low’ group, the HRs for the ‘upward’ group were 0.54 (95% CI, 0.35–0.83) among women and 0.91 (95% CI, 0.73–1.24) among men. Associations were not changed after adjusting for objective socioeconomic status but were attenuated by depression.Conclusions: ‘Downward’ mobility was associated with mortality among men, but not among women. Depression appeared to mediate the association. A protective effect of upward mobility was observed among women but not among men.

2021-03-11 07:45:02
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1 0 0 0 OA Combined Effect of Marriage and Education on Mortality: A Cross-national Study of Older Japanese and Finnish Men and Women

著者: Tami Saito Tuula Oksanen Kokoro Shirai Takeo Fujiwara Jaana Pentti Jussi Vahtera
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: vol.30, no.10, pp.442-449, 2020-10-05 (Released:2020-10-05)
参考文献数: 36
被引用文献数: 1 3

2020-12-25 05:40:02
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1 0 0 0 OA Adachi Child Health Impact of Living Difficulty (A-CHILD) Study: Research Protocol and Profiles of Participants

著者: Manami Ochi Aya Isumi Tsuguhiko Kato Satomi Doi Takeo Fujiwara
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: pp.JE20190177, (Released:2020-03-21)
参考文献数: 39
被引用文献数: 29

Background: The Adachi Child Health Impact of Living Difficulty (A-CHILD) study has been conducted since 2015 to clarify the associations between socioeconomic factors and child health, as well as to accumulate data for political evaluation of the child-poverty agenda. This paper describes the purpose and research design of the A-CHILD study and the baseline profiles of participants, together with the future framework for implementing this cohort study.Methods: We have conducted two types of continuous survey: a complete-sample survey started in 2015 as a first wave study to target first-grade children in all public elementary schools in Adachi City, Tokyo, and a biennial fixed grade observation survey started in 2016 in selected elementary and junior high schools. Questionnaires were answered by caregivers of all targeted children and also by the children themselves for those in the fourth grade and higher. The data of A-CHILD also combined information obtained from school health checkups of all school-grade children, as well as the results from blood test and measurement of blood pressure of eight-grade children since 2016.Results: The valid responses in the first wave were 4,291 (80.1%). The number of households in “living difficulties”, such as low household income or material deprivation, stood at 1,047 (24.5%).Conclusions: The A-CHILD study will contribute to the clarification of the impact of poverty on children’s health disparities and paves the way to managing this issue in the community.

2020-07-27 16:28:04
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1 0 0 0 OA Cohort Profile of the NEIGE Study in Tokamachi City, Japan

著者: Yugo Shobugawa Hiroshi Murayama Takeo Fujiwara Shigeru Inoue
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: vol.30, no.7, pp.281-287, 2020-07-05 (Released:2020-07-07)
参考文献数: 28
被引用文献数: 15

Background: Studies have shown that rural residents face disadvantages concerning medical access and socio-economic conditions. However, the social determinants of health among older people in rural areas are still unclear. The Neuron to Environmental Impact across Generations (NEIGE) study investigated the social determinants of health among older rural adults.Methods: A survey was conducted among the older residents of Tokamachi City, Japan. We randomly selected study participants (N = 1,346) from four stratified groups by age (65–74 and 75–84 years) and residential area (Tokamachi center [downtown] and Matsunoyama [mountain]). The survey collected data on socio-economic status, lifestyle, health, and neighborhood environment. Blood and urine sampling were also conducted, and physical activity was assessed. Magnetic resonance brain imaging (MRI) and Apo-E gene were also examined in the analysis.Results: In total, 527 people participated in the NEIGE study (participation rate: 39.2%). The average age of the participants was 73.5 (standard deviation, 5.6) years, and 47.3% were male. No differences in demographics were found between downtown and mountain residents, except for educational attainment, which was lower among mountain residents. Lifestyles were similar, except for the higher percentage of everyday drinkers (33.3–35.3%) in the mountain area. Concerning physical health, muscle mass, grip strength, and measured physical activity were significantly higher among mountain residents. However, gait speed and balance were better among downtown residents.Conclusion: The findings of the NEIGE study will help elucidate the social determinants of health in older rural adults in Japan, and emphasize the different outcomes between downtown and mountain areas.

2020-07-18 09:03:02
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1 0 0 0 OA Pitfalls and Tips for Statistical Methods in Epidemiology: A New Series of Special Articles Has Started

著者: Takeo Fujiwara
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: vol.30, no.4, pp.151-152, 2020-04-05 (Released:2020-04-05)
参考文献数: 4
被引用文献数: 1

2020-05-02 22:47:32
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1 0 0 0 OA Factors Associated With Family Member’s Spanking of 3.5-year-old Children in Japan

著者: Sachiko Baba Ehab S. Eshak Kokoro Shirai Takeo Fujiwara Yui Yamaoka Hiroyasu Iso
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: pp.JE20190160, (Released:2019-11-02)
参考文献数: 37
被引用文献数: 8

Background: Spanking can cause adverse psychological development and biological functional changes in children. However, spanking is widely used by parents in Japan. This study explored the risk factors for family member’s spanking of 3.5-year-old children using nationwide population data in Japan.Methods: Surveys were administered to family members in Japan who had a child in 2001 (first cohort) or in 2010 (second cohort), and the data when their child was 0.5, 1.5, and 3.5 years old were used. We used multivariate binary and ordinal logistic regression analyses to examine the associations between risk factors and spanking children at 3.5 years of age, which was subcategorized into frequencies of never, sometimes, and always spanking, presented with odds ratios (ORs) and 95% confidence intervals (CIs).Results: Among 70,450 families, 62.8% and 7.9% sometimes and always spanked their children, respectively. Children in the second cohort were spanked less frequently compared with those in the first cohort, and fathers who responded to the questionnaire spanked children less frequently than mothers who responded. Identified associated factors for spanking were male child, presence of siblings of the child, not living in a two-parent household, not living in a three-generation household, younger parents, parents with lower education, no outside work or unstable work, and lower family income.Conclusions: We found a high prevalence of spanking and its associated factors. Approaching those with lower socioeconomic factors and promoting fathers’ involvement in parenting may be important public health strategies for reducing and preventing spanking.

2020-04-27 10:35:18
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