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Journal of Epidemiology

Ryoko Kawakami, Susumu S Sawada, I-Min Lee, Yuko Gando, Haruki Momma, Shin Terada, Chihiro Kinugawa, Takashi Okamoto, Koji Tsukamoto, Mitsuru Higuchi, Motohiko Miyachi, Steven N Blair
BACKGROUND: We sought to examine the association between cardiorespiratory fitness (CRF) and incidence of type 2 diabetes considering the follow-up period in a cohort of Japanese men with a maximum follow-up period of 23 years. METHODS: This study enrolled 7,804 male workers free of diabetes in 1986. CRF was measured using a cycle ergometer, and maximal oxygen uptake was estimated. During 1986-2009, participants were followed for development of type 2 diabetes, which was diagnosed using fasting blood tests, self-administered questionnaires, or oral glucose tolerance tests after urinary tests from annual health checkups...
December 9, 2017: Journal of Epidemiology
Yuriko N Koyanagi, Keitaro Matsuo, Hidemi Ito, Akiko Tamakoshi, Yumi Sugawara, Akihisa Hidaka, Keiko Wada, Isao Oze, Yuri Kitamura, Rong Liu, Tetsuya Mizoue, Norie Sawada, Chisato Nagata, Kenji Wakai, Tomio Nakayama, Atsuko Sadakane, Keitaro Tanaka, Manami Inoue, Shoichiro Tsugane, Shizuka Sasazuki
BACKGROUND: A high body mass index (BMI) has been proposed as an important risk factor for pancreatic cancer. However, this association of BMI with pancreatic cancer risk has not been confirmed in Asian populations. METHODS: We evaluated the association between BMI (either at baseline or during early adulthood) and pancreatic cancer risk by conducting a pooled analysis of nine population-based prospective cohort studies in Japan with more than 340,000 subjects. Summary hazard ratios (HRs) were estimated by pooling study-specific HRs for unified BMI categories with a random-effects model...
December 9, 2017: Journal of Epidemiology
Tao Chen, Hiro Kishimoto, Takanori Honda, Jun Hata, Daigo Yoshida, Naoko Mukai, Mao Shibata, Toshiharu Ninomiya, Shuzo Kumagai
BACKGROUND: The purpose of this cross-sectional study was to describe the patterns and levels of sedentary time and physical activity (PA) in a general Japanese population. METHODS: A total of 1,740 community-dwelling Japanese adults aged ≥40 years participated in this study. Sedentary time and PA were assessed for 7 consecutive days using a tri-axial accelerometer. Daily patterns and levels of sedentary time and PA were calculated by sex, age group (40-64, 65-74, and ≥75 years), and body mass index (BMI; <25 and ≥25 kg/m2)...
November 25, 2017: Journal of Epidemiology
Tadashi Nakano, Takeshi Hayashi, Toru Nakagawa, Toru Honda, Satoshi Owada, Hitoshi Endo, Masayuki Tatemichi
BACKGROUND: This retrospective cohort study primarily aimed to investigate the possible association of computer use with visual field abnormalities (VFA) among Japanese workers. METHODS: The study included 2,377 workers (mean age 45.7 [standard deviation, 8.3] years; 2,229 men and 148 women) who initially exhibited no VFA during frequency doubling technology perimetry (FDT) testing. Subjects then underwent annual follow-up FDT testing for 7 years, and VFA were determined using a FDT-test protocol (FDT-VFA)...
November 25, 2017: Journal of Epidemiology
Haruki Momma, Susumu S Sawada, Robert A Sloan, Yuko Gando, Ryoko Kawakami, Shin Terada, Motohiko Miyachi, Chihiro Kinugawa, Takashi Okamoto, Koji Tsukamoto, Cong Huang, Ryoichi Nagatomi, Steven N Blair
BACKGROUND: The "Physical Activity Reference for Health Promotion 2013" provides "fit" reference values for cardiorespiratory fitness (CRF) for good health. The importance of achieving a fit CRF level for several years on the subsequent prevention of type 2 diabetes mellitus (T2DM) remains to be clarified. METHODS: This cohort study was conducted in 2,235 nondiabetic males aged 21 to 59 years, enrolled in April 1986 through March 1987. We calculated the ratio of the area under the curve (AUCratio) for actual measured values and the AUC for the reference values of CRF in each individual during an 8-year measurement period before the baseline...
November 25, 2017: Journal of Epidemiology
Tae Sasakabe, Kenji Wakai, Sayo Kawai, Asahi Hishida, Mariko Naito, Sadao Suzuki, Yora Nindita, Kokichi Arisawa, Yoshikuni Kita, Megumi Hara, Nagato Kuriyama, Akie Hirata, Haruo Mikami, Isao Oze, Michiaki Kubo, Hideo Tanaka, Nobuyuki Hamajima
BACKGROUND: Although beneficial associations have been reported between moderate alcohol intake and the serum lipid profile, it is unclear whether polymorphisms in alcohol-metabolizing enzymes can modify these associations. Here, we assessed the effects of ADH1B His48Arg (rs1229984), ALDH2 Glu504Lys (rs671), and their combination on these associations. Furthermore, we examined if the findings for ALDH2 could be replicated. METHODS: We categorized 889 male participants in the Japan Multi-Institutional Collaborative Cohort (J-MICC) Study into two groups based on presence or absence of minor allele(s) or four groups based on genotype combinations...
November 25, 2017: Journal of Epidemiology
Isabelle Savoye, Catherine M Olsen, David C Whiteman, Anne Bijon, Lucien Wald, Laureen Dartois, Françoise Clavel-Chapelon, Marie-Christine Boutron-Ruault, Marina Kvaskoff
BACKGROUND: While ultraviolet (UV) radiation exposure is a recognized risk factor for skin cancer, associations are complex and few studies have allowed a direct comparison of exposure profiles associated with cutaneous melanoma, basal-cell carcinoma (BCC), and squamous-cell carcinoma (SCC) within a single population. METHODS: We examined associations between UV exposures and skin cancer risk in a nested case-control study within E3N, a prospective cohort of 98,995 French women born in 1925-1950...
November 25, 2017: Journal of Epidemiology
Tirani Bahari, Hirokazu Uemura, Sakurako Katsuura-Kamano, Miwa Yamaguchi, Mariko Nakamoto, Keisuke Miki, Masashi Ishizu, Kokichi Arisawa
BACKGROUND: Nutrients have been proposed to be related to metabolic syndrome (MetS). The aims of this study were to identify dietary patterns that correlated with several nutrients using reduced rank regression (RRR) and to examine the association between extracted dietary patterns and prevalence of MetS in a Japanese population. METHODS: The study population comprised 1,092 Japanese men and women (35-69 years old) who had participated in the baseline survey of the Japan Multi-Institutional Collaborative Cohort Study in Tokushima Prefecture...
November 18, 2017: Journal of Epidemiology
Takahiro Tabuchi, Hiroyasu Iso, Eric Brunner
Previous systematic reviews of population-level tobacco control interventions and their effects on smoking inequality by socioeconomic factors concluded that tobacco taxation reduce smoking inequality by income (although this is not consistent for other socioeconomic factors, such as education). Inconsistent results have been reported for socioeconomic differences, especially for other tobacco control measures, such as smoke-free policies and anti-tobacco media campaigns. To understand smoking inequality itself and to develop strategies to reduce smoking inequality, knowledge of the underlying principles or mechanisms of the inequality over a long time-course may be important...
November 18, 2017: Journal of Epidemiology
Saki Narita, Eiko Saito, Norie Sawada, Taichi Shimazu, Taiki Yamaji, Motoki Iwasaki, Shizuka Sasazuki, Mitsuhiko Noda, Manami Inoue, Shoichiro Tsugane
BACKGROUND: Many epidemiological studies have indicated a positive association between coffee intake and lung cancer risk, but such findings were suggested to be confounded by smoking. Furthermore, only a few of these studies have been conducted in Asia. Here, we investigated the association between coffee intake and lung cancer risk in one of the largest prospective cohort studies in Japan. METHODS: We investigated the association of coffee drinking and subsequent incidence of lung cancer among 41,727 men and 45,352 women in the Japan Public Health Center-based Prospective Study using Cox proportional hazards regression, with adjustment for potential confounders and by strata of smoking status...
November 18, 2017: Journal of Epidemiology
Hideki Tsumura, Hideyuki Kanda, Nagisa Sugaya, Satoshi Tsuboi, Kenzo Takahashi
BACKGROUND: The prevalence of Internet addiction (IA) among employed adults has not been reported using a large sample. To clarify the actual status of addictive Internet use among employed adults, this study aimed to evaluate the prevalence and the risk factors of IA and at-risk IA among employed adults in Japan. METHODS: This cross-sectional study surveyed all junior and senior high school personnel in Shimane Prefecture, a rural area in Japan. Eligible participants included 3,211 junior and senior high school personnel (1,259 men and 1,952 women)...
November 18, 2017: Journal of Epidemiology
Jiwon Chang, Soon Young Hwang, Su Kyoung Park, Jin Hwan Kim, Hyung-Jong Kim, Sung-Won Chae, Jae-Jun Song
BACKGROUND: Dizziness is one of the most common complaints in medicine and a frequent symptom among older people. Dizziness has a considerable impact on life quality and is associated with high economic costs. The purpose of this study was to evaluate the prevalence of dizziness in the general population and to describe its clinical characteristics and associated factors. METHODS: The Korea National Health and Nutrition Examination Survey (KNHANES) is a cross-sectional survey of the civilian, non-institutionalized population of South Korea...
November 18, 2017: Journal of Epidemiology
Eiko Saito, Manami Inoue, Norie Sawada, Hadrien Charvat, Taichi Shimazu, Taiki Yamaji, Motoki Iwasaki, Shizuka Sasazuki, Tetsuya Mizoue, Hiroyasu Iso, Shoichiro Tsugane
BACKGROUND: We examined the associations of alcohol consumption and liver holidays with all-cause mortality and with mortality due to cancer, heart disease, cerebrovascular disease, respiratory disease, and injury using a large-scale prospective study in Japan. METHODS: We followed 102,849 Japanese who were aged between 40 and 69 years at baseline for 18.2 years on average, during which 15,203 deaths were reported. Associations between alcohol intake and mortality risk were assessed using a Cox proportional hazards model, with analysis by the number of liver holidays (in which a person abstains from drinking for several days a week)...
November 11, 2017: Journal of Epidemiology
Tomomi Egawa-Takata, Yutaka Ueda, Akiko Morimoto, Yusuke Tanaka, Asami Yagi, Yoshito Terai, Masahide Ohmichi, Tomoyuki Ichimura, Toshiyuki Sumi, Hiromi Murata, Hidetaka Okada, Hidekatsu Nakai, Masaki Mandai, Shinya Matsuzaki, Eiji Kobayashi, Kiyoshi Yoshino, Tadashi Kimura, Junko Saito, Yumiko Hori, Eiichi Morii, Tomio Nakayama, Mikiko Asai-Sato, Etsuko Miyagi, Masayuki Sekine, Takayuki Enomoto, Yorihiko Horikoshi, Tetsu Takagi, Kentaro Shimura
BACKGROUND: In Japan, the rate of cervical cancer screening is remarkably low, especially among women in their twenties and thirties, when cervical cancer is now increasing dramatically. The aim of this study was to test whether a modified government reminder for 20-year-old women to engage in cervical cancer screening, acting through maternal education and by asking for a maternal recommendation to the daughter to receive the screening, could increase their participation rate. METHODS: In two Japanese cities, 20-year-old girls who had not received their first cervical cancer screening before October of fiscal year 2014 were randomized into two study arms...
November 11, 2017: Journal of Epidemiology
Shusaku Inoue, Satoyo Hosono, Hidemi Ito, Isao Oze, Yoshikazu Nishino, Masakazu Hattori, Tomohiro Matsuda, Isao Miyashiro, Tomio Nakayama, Mika Mizuno, Keitaro Matsuo, Kiyoko Kato, Hideo Tanaka, Yuri Ito
BACKGROUND: Medical circumstances in Japanese patients with cancer of the corpus uteri have greatly changed since the late 1990s, including the introduction of concomitant therapy with taxane and platinum. We evaluated changes in survival rates for this cancer following these advances by analyzing data from population-based cancer registries in Japan. METHODS: Data were available for 8562 cases of cancer of the corpus uteri from six prefectural cancer registries...
November 4, 2017: Journal of Epidemiology
Mi Kyoung Son, Nam-Kyoo Lim, Hyun-Young Park
BACKGROUND: This study examined the annual prevalence of atrial fibrillation (AF) and its associated comorbidities, as well as the prevalence of warfarin therapy in South Korean patients with AF. METHODS: The National Health Insurance Service-National Sample Cohort database was searched for subjects aged ≥30 years diagnosed with AF from 2002-2013. The prevalence of AF was analyzed by sex and age, as was the current status of warfarin therapy in AF patients according to CHA2DS2-VASc score and comorbidities...
November 4, 2017: Journal of Epidemiology
Rob M van Dam
No abstract text is available yet for this article.
October 28, 2017: Journal of Epidemiology
Jisun Lim, Jung Ah Lee, Hong-Jun Cho
BACKGROUND: We aimed to investigate the association between alcohol drinking patterns and the presence of impaired fasting glucose (IFG) and diabetes mellitus (DM). METHODS: We used data from the Korean National Health and Nutrition Examination Survey, 2010-2014. The participants were aged ≥30 years and had no previous diagnosis of DM. High-risk drinking was defined as alcohol consumption of ≥7 glasses at a sitting for men, and ≥5 glasses for women. After adjusting for confounding factors, a polychotomous logistic regression analysis was performed to assess the association of drinking patterns with IFG and DM...
October 28, 2017: Journal of Epidemiology
Keisuke Kuwahara, Toru Honda, Tohru Nakagawa, Shuichiro Yamamoto, Takeshi Hayashi, Tetsuya Mizoue
BACKGROUND: Data on the effect of physical activity intensity on depression is scarce. We investigated the prospective association between intensity of leisure-time exercise and risk of depressive symptoms among Japanese workers. METHODS: The participants were 29,052 employees (24,653 men and 4,399 women) aged 20 to 64 years without psychiatric disease including depressive symptoms at health checkup in 2006-2007 and were followed up until 2014-2015. Details of leisure-time exercise were ascertained via a questionnaire...
October 28, 2017: Journal of Epidemiology
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