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Journal of Epidemiology

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https://www.readbyqxmd.com/read/30584233/the-circulatory-risk-in-communities-study-circs-a-long-term-epidemiological-study-for-lifestyle-related-disease-among-japanese-men-and-women-living-in-communities
#1
Kazumasa Yamagishi, Isao Muraki, Yasuhiko Kubota, Mina Hayama-Terada, Hironori Imano, Renzhe Cui, Mitsumasa Umesawa, Yuji Shimizu, Tomoko Sankai, Takeo Okada, Shinichi Sato, Akihiko Kitamura, Masahiko Kiyama, Hiroyasu Iso
The Circulatory Risk in Communities Study (CIRCS) is an ongoing community-based epidemiological study of lifestyle-related disease, involving dynamic prospective cohorts of approximately 12,000 adults from 5 communities of Japan: Ikawa, Ishizawa and Kita-Utetsu (Akita), Minami-Takayasu (Osaka), Noichi (Kochi), and Kyowa (Ibaraki). One of the most notable features of CIRCS is that it is not only an observational cohort study to identify risk factors for cardiovascular diseases (CVD) such as stroke, coronary heart disease, and sudden cardiac death, but it also involves prevention programs for CVD...
December 22, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30584232/trends-in-lipids-and-lipoproteins-among-adults-in-northwestern-xinjiang-china-from-1998-through-2015
#2
Ling Zhou, Xin Zhao, Mulalibieke Heizhati, Suofeiya Abulikemu, Delian Zhang, Qiuyan Cheng, Weijin Ouyang, Xiaoguang Yao, Jing Hong, Ting Wu, Zuhere Xiamili, Nanfang Li
BACKGROUND: To examine trends in serum lipids in population in Northwestern Xinjiang between 1998 and 2015 and to provide clues for future prevention. METHODS: We enrolled 5,142 adults aged ≥30 years from seven independent cross-sectional studies conducted in 1998-2000, 2007-2008, and 2015. Blood lipid profiles, such as total cholesterol (TC), triglyceride (TG), high-density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C), were measured...
December 22, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30555117/trends-in-serum-lipid-levels-of-a-10-and-13-year-old-population-in-fukuroi-city-japan-2007-2017
#3
Katsuyasu Kouda, Masayuki Iki, Yuki Fujita, Harunobu Nakamura, Kumiko Ohara, Takahiro Tachiki, Toshimasa Nishiyama
BACKGROUND: Current trends in serum lipid levels among children are likely to be important predictors of future cardiovascular disease prevalence. However, no studies have examined trends in low-density lipoprotein cholesterol (LDL-C) levels in Japanese children. METHODS: We investigated trends in LDL-C levels from 2008 to 2017 and HDL-C levels from 2007 to 2017 in a population of 10- and 13-year-old children in Fukuroi City, Japan. We analyzed 17838 children, accounting for 93...
December 15, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30555116/factors-associated-with-intention-of-future-pregnancy-among-women-affected-by-the-fukushima-nuclear-accident-analysis-of-fukushima-health-management-survey-data-from-2012-to-2014
#4
Aya Goto, Yusuke Tsugawa, Keiya Fujimori
BACKGROUND: Little is known about the association between the anxiety toward the effects of radiation on reproduction caused by the Fukushima nuclear accident and the birth rate of people in Fukushima. Therefore, we examined changes and associated factors of future pregnancy intention among mothers in Fukushima Prefecture. METHODS: Using data from three postal surveys among women who registered their pregnancies in the prefecture (N = 6,751 in 2012, N = 6,871 in 2013, and N = 6,725 in 2014), we analyzed the factors associated with women's intention of future pregnancy using multivariable logistic regression models...
December 15, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30555115/body-mass-index-and-risks-of-incident-ischemic-stroke-subtypes-the-japan-public-health-center-based-prospective-jphc-study
#5
Yuanying Li, Hiroshi Yatsuya, Hiroyasu Iso, Kazumasa Yamagishi, Isao Saito, Yoshihiro Kokubo, Norie Sawada, Shoichiro Tsugane
BACKGROUND: The association of body mass index (BMI) with risks of ischemic stroke subtypes have not been established. METHODS: Cumulative average BMI was calculated using self-reported body weight and height obtained from baseline (Cohort I in 1990, and Cohort II from 1993-1994) and 5- and 10-year questionnaire surveys of Japan Public Health Center-based prospective (JPHC) study. A total of 42,343 men and 46,413 women aged 40-69 years were followed-up for the incidence of lacunar, large-artery occlusive, and cardioembolic strokes...
December 15, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30531123/an-epidemiological-study-of-the-risk-factors-of-bicycle-related-falls-among-japanese-older-adults
#6
Ryota Sakurai, Hisashi Kawai, Hiroyuki Suzuki, Susumu Ogawa, Hunkyung Kim, Yutaka Watanabe, Hirohiko Hirano, Kazushige Ihara, Shuichi Obuchi, Yoshinori Fujiwara
BACKGROUND: Considering the rate of growth of the older population in several countries, accidental falls in older cyclists are expected to increase. However, the prevalence and correlates of bicycle-related falls (BR-falls) are unknown. The aim of the present study was to explore the characteristics of BR-falls, focusing on the risk factors. METHODS: Seven-hundred and ninety-one older adults participated in a comprehensive baseline assessment including questions on bicycle use, BR-falls, lifestyle, and physical and cognitive evaluations...
December 8, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30531122/decline-in-handgrip-strength-from-midlife-to-late-life-is-associated-with-dementia-in-a-japanese-community-the-hisayama-study
#7
Yozo Hatabe, Mao Shibata, Tomoyuki Ohara, Emi Oishi, Daigo Yoshida, Takanori Honda, Jun Hata, Shigenobu Kanba, Takanari Kitazono, Toshiharu Ninomiya
BACKGROUND: The association between decline in handgrip strength from midlife to late-life and dementia is unclear. METHODS: Japanese community-dwellers without dementia aged 60 to 79 (i.e., individuals in late-life; mean age, 68 years) were followed for 24 years (1988-2012) (n=1,055); 835 of them had participated in a health examination in 1973-1974 (mean age, 53 years), and these earlier data were used for the midlife analysis. Using a Cox proportional hazards model, we estimated the risk conferred by a decline in handgrip strength over a 15-year period (1973-74 to 1988) from midlife to late-life on the development of total dementia, Alzheimer's disease (AD) and vascular dementia (VaD) over the late-life follow-up period from 1988 to 2012...
December 8, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30473546/premature-mortality-due-to-malignancies-of-the-kidney-and-bladder-in-japan-1980-2010
#8
Truong-Minh Pham, Tatsuhiko Kubo, Yoshihisa Fujino, Naohiro Fujimoto, Ikko Tomisaki, Akinori Minato, Shinya Matsuda
BACKGROUND: In the present study, we examined the trends of premature mortality due to kidney and bladder cancers among the Japanese population from 1980 through 2010. METHODS: Mortality data were obtained from the World Health Organization mortality database. Years of life lost (YLL) was estimated using Japanese life tables. Average lifespan shortened (ALSS) was calculated and defined as the ratio of years of life lost relative to the expected lifespan. RESULTS: Over the study period, the age-standardized rates to the World Standard Population for deaths from kidney and bladder cancers were stable...
November 24, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30473545/community-social-capital-and-depressive-symptoms-among-older-people-in-japan-a-multilevel-longitudinal-study
#9
Miwa Yamaguchi, Yosuke Inoue, Tomohiro Shinozaki, Masashige Saito, Daisuke Takagi, Katsunori Kondo, Naoki Kondo
BACKGROUND: This study aimed to examine the contextual effects of community-level social capital on the onset of depressive symptoms using a longitudinal study design. METHODS: We used questionnaire data from the 2010 and 2013 waves of the Japan Gerontological Evaluation Study that included 14,465 men and 14,600 women aged over 65 years from 295 communities. We also used data of a three-wave panel (2006-2010-2013) to test the robustness of the findings (n = 7,424)...
November 24, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30449770/trends-in-small-cell-lung-cancer-survival-in-1993-2006-based-on-population-based-cancer-registry-data-in-japan
#10
Isao Oze, Hidemi Ito, Yoshikazu Nishino, Masakazu Hattori, Tomio Nakayama, Isao Miyashiro, Keitaro Matsuo, Yuri Ito
BACKGROUND: Lung cancers are classified into small-cell lung cancer (SCLC) and non-small-cell lung cancer due to their different treatment and prognosis. Although many studies have reported the specific survival of SCLC patients treated at cancer hospitals, survival from population-based data has rarely been reported. METHODS: We analyzed survival of SCLC cases diagnosed from 1993 through 2006 from a population-based cancer registry of six prefectures. To assess trends in SCLC survival, we defined three periods that mirrored developments in SCLC treatment: period 1, 1993-1998; period 2, 1999-2001; and period 3, 2002-2006...
November 17, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30449769/socioeconomic-disparity-in-the-prevalence-of-objectively-evaluated-diabetes-among-older-japanese-adults-jages-cross-sectional-data-in-2010
#11
Yuiko Nagamine, Naoki Kondo, Kenichi Yokobayashi, Asami Ota, Yasuhiro Miyaguni, Yuri Sasaki, Yukako Tani, Katsunori Kondo
BACKGROUND: Studies on sex-specific socioeconomic gradients in objectively evaluated diabetes among older adults are scarce. METHODS: We used cross-sectional data of 9,893 adults aged 65 years and older in Aichi Prefecture without long-term care insurance from the Japan Gerontological Evaluation Study (JAGES) in 2010 (Response rate: 66.3%). We collected demographic, socioeconomic (income, years of education, and longest occupation) and behavioral information using a mail-in self-reported survey...
November 17, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30449768/frequency-of-balanced-meal-consumption-and-frailty-in-community-dwelling-older-japanese-a-cross-sectional-study
#12
Yuri Yokoyama, Akihiko Kitamura, Mariko Nishi, Satoshi Seino, Yu Taniguchi, Hidenori Amano, Tomoko Ikeuchi, Shoji Shinkai
BACKGROUND: Although meals that combine a staple food, main dish, and side dish (balanced meals) are recommended in Japan, the health effects of such meals are unclear. We investigated the association of frequency of eating balanced meals with frailty among community-dwelling older Japanese. METHODS: We analyzed data from 912 persons aged 65 years or older who participated in the Hatoyama Cohort Study or Kusatsu Longitudinal Study. The frequency of eating two or more balanced meals daily was self-reported as ≤1 day/week, 2 or 3 days/week, 4 or 5 days/week, and daily...
November 17, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30416164/commentary-test-negative-design-reduces-confounding-by-healthcare-seeking-attitude-in-case-control-studies
#13
Kotaro Ozasa, Wakaba Fukushima
No abstract text is available yet for this article.
November 10, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30416163/nationwide-survey-of-pediatric-inpatients-with-hand-foot-and-mouth-disease-herpangina-and-associated-complications-during-an-epidemic-period-in-japan-estimated-number-of-hospitalized-patients-and-factors-associated-with-severe-cases
#14
Maria Takechi, Wakaba Fukushima, Takashi Nakano, Miki Inui, Satoko Ohfuji, Tetsuo Kase, Kazuya Ito, Kyoko Kondo, Akiko Maeda, Hiroyuki Shimizu, Yoshio Hirota
BACKGROUND: Severe pediatric cases of hand, foot, and mouth disease (HFMD), herpangina (HA), and associated complications caused by enterovirus 71 (EV71) infection have brought substantial public health impact in Asia. This study aimed to elucidate the epidemiology of these pediatric cases in Japan. METHODS: A nationwide survey was conducted using stratified random sampling of hospital pediatric departments. We estimated the number of inpatients with HFMD, HA, and associated complications between April 1 and September 30, 2010, during which EV71 was circulating predominantly...
November 10, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30416162/severity-of-nausea-and-vomiting-in-singleton-and-twin-pregnancies-in-relation-to-fetal-sex-the-japan-environment-and-children-s-study-jecs
#15
Naomi Mitsuda, Masamitsu Eitoku, Nagamasa Maeda, Mikiya Fujieda, Narufumi Suganuma
BACKGROUND: Some studies have indicated that female birth and multiple births were risk factors for nausea and vomiting during pregnancy (NVP). The results, however, were conflicting. Our study was conducted to evaluate the association of maternal NVP with fetal sex in singleton and twin pregnancies. METHODS: We used the data set from a birth cohort study, the Japan Environment and Children's Study (JECS). In the self-administered questionnaire, participants were asked whether they experienced NVP prior to 12 gestational weeks...
November 10, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30393269/association-between-body-mass-index-and-all-cause-death-in-japanese-population-pooled-individual-participant-data-analysis-of-13-cohort-studies
#16
Atsushi Hozawa, Takumi Hirata, Hiroshi Yatsuya, Yoshitaka Murakami, Shinichi Kuriyama, Ichiro Tsuji, Daisuke Sugiyama, Atsushi Satoh, Sachiko Tanaka-Mizuno, Katsuyuki Miura, Hirotsugu Ueshima, Tomonori Okamura
BACKGROUND: To investigate the optimal values of BMI for the lowest risk of all-cause death and whether the optimal BMI differs according to smoking status in large-scale pooled analysis of 13 Japanese cohorts. METHODS: Data from 179,987 participants of 13 well-qualified cohort studies conducted throughout Japan were used for our analysis. A cohort-stratified Cox proportional hazard model was used. P values for interactions were calculated based on the cross product of BMI and age, sex, or smoking status...
November 3, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30369512/bathing-frequency-and-onset-of-functional-disability-among-japanese-older-adults-a-prospective-3-year-cohort-study-from-the-jages
#17
Akio Yagi, Shinya Hayasaka, Toshiyuki Ojima, Yuri Sasaki, Taishi Tsuji, Yasuhiro Miyaguni, Yuiko Nagamine, Takao Namiki, Katsunori Kondo
BACKGROUND: While bathing styles vary among countries, most Japanese people prefer tub bathing to showers and saunas. However, few studies have examined the relationship between tub bathing and health outcomes. Accordingly, in this prospective cohort study, we investigated the association between tub bathing frequency and the onset of functional disability among older people in Japan. METHODS: We used data from the Japan Gerontological Evaluation Study (JAGES). The baseline survey was conducted from August 2010 to January 2012 and enrolled 13,786 community-dwelling older people (6,482 men and 7,304 women) independent in activities of daily living...
October 27, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30369511/japanese-nationwide-study-on-the-association-between-short-term-exposure-to-particulate-matter-and-mortality
#18
Takehiro Michikawa, Kayo Ueda, Akinori Takami, Seiji Sugata, Ayako Yoshino, Hiroshi Nitta, Shin Yamazaki
BACKGROUND: From around 2012, the use of automated equipment for fine particulate matter (PM2.5 ) measurement with equivalence to a reference method has become popular nationwide in Japan. This enabled us to perform a national health effect assessment employing PM2.5 concentrations based on the standardised measurement method. We evaluated the association between non-accidental mortality and short-term exposure to PM2.5 and coarse particulate matter (PM), with the latter estimated as the difference between suspended particulate matter and PM2...
October 27, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30369510/objectively-assessed-patterns-and-reported-domains-of-sedentary-behavior-among-japanese-older-adults
#19
Ai Shibata, Koichiro Oka, Kaori Ishii, Rina Miyawaki, Shigeru Inoue, Takemi Sugiyama, Neville Owen
BACKGROUND: Prolonged periods of sitting time can be adversely associated with older adults' well-being and functional capacities. Understanding patterns and contexts of sedentary behaviors (SB) can inform approaches to prevention. This study examined Japanese older adults' objectively-assessed patterns and reported domains of SB and their interrelationships. METHODS: Participants (n = 297; aged 65-84 years) of this cross-sectional study wore an accelerometer for 7 days and completed a survey...
October 27, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/30344200/determining-the-optimal-number-of-wearing-days-given-a-fixed-number-of-accelerometers-in-population-level-study
#20
Paul H Lee
BACKGROUND: In research using accelerometers to measure physical activity, the number of accelerometers that can be utilized in a study and the study duration are both constrained. It means that increasing the number of accelerometer wearing days for all subjects leads to a decrease in the total number of participants the study can recruit. We used simulations to find the optimal number of wearing days / number of participant combination given a fixed number of accelerometer days. METHODS: Two scenarios were studied here, including estimation of population physical activity level and the association between physical activity level and a health outcome...
October 20, 2018: Journal of Epidemiology
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