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European Journal of Epidemiology

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https://www.readbyqxmd.com/read/28550648/pregnancy-outcome-in-more-than-5000-births-to-women-with-viral-hepatitis-a-population-based-cohort-study-in-sweden
#1
Knut Stokkeland, Jonas Filip Ludvigsson, Rolf Hultcrantz, Anders Ekbom, Jonas Höijer, Matteo Bottai, Olof Stephansson
Previous studies have shown inconsistent results with respect to hepatitis B (HBV), hepatitis C (HCV) and pregnancy outcome. The aim of this study was to investigate pregnancy outcome in women with HBV or HCV. In a nationwide cohort of births between 2001 and 2011 we investigated the risks of adverse pregnancy outcomes in 2990 births to women with HBV and 2056 births to women with HCV using data from Swedish healthcare registries. Births to women without HBV (n = 1090 979), and births without HCV (n = 1091 913) served as population controls...
May 26, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28550647/genetic-variation-in-the-adipoq-gene-adiponectin-concentrations-and-risk-of-colorectal-cancer-a-mendelian-randomization-analysis-using-data-from-three-large-cohort-studies
#2
Katharina Nimptsch, Mingyang Song, Krasimira Aleksandrova, Michail Katsoulis, Heinz Freisling, Mazda Jenab, Marc J Gunter, Konstantinos K Tsilidis, Elisabete Weiderpass, H Bas Bueno-De-Mesquita, Dawn Q Chong, Majken K Jensen, Chunsen Wu, Kim Overvad, Tilman Kühn, Myrto Barrdahl, Olle Melander, Karin Jirström, Petra H Peeters, Sabina Sieri, Salvatore Panico, Amanda J Cross, Elio Riboli, Bethany Van Guelpen, Robin Myte, José María Huerta, Miguel Rodriguez-Barranco, José Ramón Quirós, Miren Dorronsoro, Anne Tjønneland, Anja Olsen, Ruth Travis, Marie-Christine Boutron-Ruault, Franck Carbonnel, Gianluca Severi, Catalina Bonet, Domenico Palli, Jürgen Janke, Young-Ae Lee, Heiner Boeing, Edward L Giovannucci, Shuji Ogino, Charles S Fuchs, Eric Rimm, Kana Wu, Andrew T Chan, Tobias Pischon
Higher levels of circulating adiponectin have been related to lower risk of colorectal cancer in several prospective cohort studies, but it remains unclear whether this association may be causal. We aimed to improve causal inference in a Mendelian Randomization meta-analysis using nested case-control studies of the European Prospective Investigation into Cancer and Nutrition (EPIC, 623 cases, 623 matched controls), the Health Professionals Follow-up Study (HPFS, 231 cases, 230 controls) and the Nurses' Health Study (NHS, 399 cases, 774 controls) with available data on pre-diagnostic adiponectin concentrations and selected single nucleotide polymorphisms in the ADIPOQ gene...
May 26, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28540474/lipid-levels-and-risk-of-venous-thrombosis-results-from-the-mega-study
#3
Vânia M Morelli, Willem M Lijfering, Mettine H A Bos, Frits R Rosendaal, Suzanne C Cannegieter
The relationship between lipid levels and risk of venous thrombosis is not well established. We aimed to assess the association between several lipids and risk of venous thrombosis using data from a population-based case-control study, and to evaluate the underlying mechanism, considering confounding by common risk factors and mediation via hemostatic factors and C-reactive protein. From the Multiple Environmental and Genetic Assessment of risk factors for venous thrombosis (MEGA) study, 2234 patients with a first venous thrombosis and 2873 controls were included...
May 24, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28534227/overdiagnostic-uncertainty
#4
LETTER
Bjørn Hofmann
No abstract text is available yet for this article.
May 22, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28527048/interpreting-findings-from-mendelian-randomization-using-the-mr-egger-method
#5
Stephen Burgess, Simon G Thompson
Mendelian randomization-Egger (MR-Egger) is an analysis method for Mendelian randomization using summarized genetic data. MR-Egger consists of three parts: (1) a test for directional pleiotropy, (2) a test for a causal effect, and (3) an estimate of the causal effect. While conventional analysis methods for Mendelian randomization assume that all genetic variants satisfy the instrumental variable assumptions, the MR-Egger method is able to assess whether genetic variants have pleiotropic effects on the outcome that differ on average from zero (directional pleiotropy), as well as to provide a consistent estimate of the causal effect, under a weaker assumption-the InSIDE (INstrument Strength Independent of Direct Effect) assumption...
May 19, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28510098/body-mass-index-and-risk-of-colorectal-carcinoma-subtypes-classified-by-tumor-differentiation-status
#6
Akiko Hanyuda, Yin Cao, Tsuyoshi Hamada, Jonathan A Nowak, Zhi Rong Qian, Yohei Masugi, Annacarolina da Silva, Li Liu, Keisuke Kosumi, Thing Rinda Soong, Iny Jhun, Kana Wu, Xuehong Zhang, Mingyang Song, Jeffrey A Meyerhardt, Andrew T Chan, Charles S Fuchs, Edward L Giovannucci, Shuji Ogino, Reiko Nishihara
Previous studies suggest that abnormal energy balance status may dysregulate intestinal epithelial homeostasis and promote colorectal carcinogenesis, yet little is known about how host energy balance and obesity influence enterocyte differentiation during carcinogenesis. We hypothesized that the association between high body mass index (BMI) and colorectal carcinoma incidence might differ according to tumor histopathologic differentiation status. Using databases of the Nurses' Health Study and Health Professionals Follow-up Study, and duplication-method Cox proportional hazards models, we prospectively examined an association between BMI and the incidence of colorectal carcinoma subtypes classified by differentiation features...
May 16, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28508267/will-it-be-cheese-bologna-or-peanut-butter
#7
Walter C Willett
No abstract text is available yet for this article.
May 15, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28508266/the-combined-association-of-alcohol-consumption-with-dementia-risk-is-likely-biased-due-to-lacking-account-of-death-cases
#8
LETTER
Nadine Binder, Lisa Manderscheid, Martin Schumacher
No abstract text is available yet for this article.
May 15, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28501907/tacit-knowledge
#9
Alexander Muir Walker
Information that is not made explicit is nonetheless embedded in most of our standard procedures. In its simplest form, embedded information may take the form of prior knowledge held by the researcher and presumed to be agreed to by consumers of the research product. More interesting are the settings in which the prior information is held unconsciously by both researcher and reader, or when the very form of an "effective procedure" incorporates its creator's (unspoken) understanding of a problem. While it may not be productive to exhaustively detail the embedded or tacit knowledge that manifests itself in creative scientific work, at least at the beginning, we may want to routinize methods for extracting and documenting the ways of thinking that make "experts" expert...
May 13, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28497292/cancer-subtypes-in-aetiological-research
#10
Lorenzo Richiardi, Francesco Barone-Adesi, Neil Pearce
Researchers often attempt to categorize tumors into more homogeneous subtypes to better predict prognosis or understand pathogenic mechanisms. In clinical research, typically the focus is on prognosis: the tumor subtypes are intended to be associated with specific responses to treatment and/or different clinical outcomes. In aetiological research, the focus is on identifying distinct pathogenic mechanisms, which may involve different risk factors. We used directed acyclic graphs to present a framework for considering potential biases arising in aetiological research of tumor subtypes, when there is incomplete correspondence between the identified subtypes and the underlying pathogenic mechanisms...
May 11, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28434075/associations-of-self-reported-smoking-cotinine-levels-and-epigenetic-smoking-indicators-with-oxidative-stress-among-older-adults-a-population-based-study
#11
Xu Gao, Xīn Gào, Yan Zhang, Lutz Philipp Breitling, Ben Schöttker, Hermann Brenner
Tobacco smoking and oxidative stress (OS) are both related to a wide spectrum of adverse age-related health outcomes, but their association is not yet well-established. We examined the associations of self-reported smoking indicators, serum cotinine levels and smoking-related DNA methylation biomarkers with two urinary proxy markers of OS, 8-isoprostane (8-iso) and 8-hydroxy-2'-deoxyguanosine (8-oxodG), in two independent subsets of older adults recruited in Germany (discovery set: n = 978, validation set: n = 531)...
April 22, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28417273/maternal-height-and-breast-cancer-risk-results-from-a-study-nested-within-the-epic-greece-cohort
#12
LETTER
Michail Katsoulis, Carlo La Vecchia, Antonia Trichopoulou, Pagona Lagiou
The positive association of adult height with breast cancer (BC) risk has been hypothesized to be partly accounted for by an association of this risk with maternal height (operating in utero to modify hormone effects). In a case-control study (271 BC patients and 791 controls) nested within the EPIC-Greece cohort, we applied mediation analysis to calculate the direct and indirect (through the woman's own height) effect of maternal height on BC risk. Per 5 cm increase in maternal height and depending on its reference value: the indirect effect odds ratio ranges from 1...
April 17, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28409278/moderate-alcohol-consumption-is-associated-with-lower-chronic-disease-burden-expressed-in-disability-adjusted-life-years-a-prospective-cohort-study
#13
Joline W J Beulens, Heidi P Fransen, Ellen A Struijk, Jolanda M A Boer, G Ardine de Wit, N Charlotte Onland-Moret, Jeljer Hoekstra, H Bas Bueno-de-Mesquita, Petra H M Peeters, Anne M May
The relation of alcohol consumption with disease burden remains debated partly due to opposite associations with cardiovascular disease (CVD) and cancer. The relation of alcohol consumption with disease burden expressed in disability-adjusted life years (DALYs) summarizes opposing associations of alcohol consumption on chronic diseases. This study aimed to investigate the association of alcohol consumption with chronic disease burden expressed in DALYs based on individual-participant data. The study was a prospective study among 33,066 men and women from the EPIC-NL cohort...
April 13, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28405867/low-serum-magnesium-levels-are-associated-with-increased-risk-of-fractures-a-long-term-prospective-cohort-study
#14
Setor Kwadzo Kunutsor, Michael Richard Whitehouse, Ashley William Blom, Jari Antero Laukkanen
Magnesium, which is an essential trace element that plays a key role in several cellular processes, is a major component of bone; however, its relationship with risk of major bone fractures is uncertain. We aimed to investigate the association of baseline serum magnesium concentrations with risk of incident fractures. We analyzed data on 2245 men aged 42-61 years in the Kuopio Ischemic Heart Disease prospective cohort study, with the assessment of serum magnesium measurements and dietary intakes made at baseline...
April 12, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28397016/food-groups-and-risk-of-type-2-diabetes-mellitus-a-systematic-review-and-meta-analysis-of-prospective-studies
#15
Lukas Schwingshackl, Georg Hoffmann, Anna-Maria Lampousi, Sven Knüppel, Khalid Iqbal, Carolina Schwedhelm, Angela Bechthold, Sabrina Schlesinger, Heiner Boeing
The aim of this systematic review and meta-analysis was to synthesize the knowledge about the relation between intake of 12 major food groups and risk of type 2 diabetes (T2D). We conducted a systematic search in PubMed, Embase, Medline (Ovid), Cochrane Central, and Google Scholar for prospective studies investigating the association between whole grains, refined grains, vegetables, fruits, nuts, legumes, eggs, dairy, fish, red meat, processed meat, and sugar-sweetened beverages (SSB) on risk of T2D. Summary relative risks were estimated using a random effects model by contrasting categories, and for linear and non-linear dose-response relationships...
April 10, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28391539/interactions-between-dietary-acrylamide-intake-and-genes-for-ovarian-cancer-risk
#16
Janneke G F Hogervorst, Piet A van den Brandt, Roger W L Godschalk, Frederik-Jan van Schooten, Leo J Schouten
Some epidemiological studies observed a positive association between dietary acrylamide intake and ovarian cancer risk but the causality needs to be substantiated. By analyzing gene-acrylamide interactions for ovarian cancer risk for the first time, we aimed to contribute to this. The prospective Netherlands Cohort Study on diet and cancer includes 62,573 women, aged 55-69 years. At baseline in 1986, a random subcohort of 2589 women was sampled from the total cohort for a case cohort analysis approach. Dietary acrylamide intake of subcohort members and ovarian cancer cases (n = 252, based on 20...
April 8, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28374228/milk-and-dairy-consumption-and-risk-of-cardiovascular-diseases-and-all-cause-mortality-dose-response-meta-analysis-of-prospective-cohort-studies
#17
Jing Guo, Arne Astrup, Julie A Lovegrove, Lieke Gijsbers, David I Givens, Sabita S Soedamah-Muthu
With a growing number of prospective cohort studies, an updated dose-response meta-analysis of milk and dairy products with all-cause mortality, coronary heart disease (CHD) or cardiovascular disease (CVD) have been conducted. PubMed, Embase and Scopus were searched for articles published up to September 2016. Random-effect meta-analyses with summarised dose-response data were performed for total (high-fat/low-fat) dairy, milk, fermented dairy, cheese and yogurt. Non-linear associations were investigated using the spine models and heterogeneity by subgroup analyses...
April 3, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28342085/concerns-about-the-long-term-safety-of-live-kidney-donors-are-justified
#18
Abimereki D Muzaale, Allan B Massie, Dorry L Segev
No abstract text is available yet for this article.
March 24, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28321694/the-born-in-guangzhou-cohort-study-bigcs
#19
Xiu Qiu, Jin-Hua Lu, Jian-Rong He, Kin-Bong Hubert Lam, Song-Ying Shen, Yong Guo, Ya-Shu Kuang, Ming-Yang Yuan, Lan Qiu, Nian-Nian Chen, Min-Shan Lu, Wei-Dong Li, Yan-Fei Xing, Feng-Juan Zhou, Suzanne Bartington, Kar Keung Cheng, Hui-Min Xia
The Born in Guangzhou Cohort Study (BIGCS) is a large-scale prospective observational study investigating the role of social, biological and environmental influences on pregnancy and child health and development in an urban setting in southern China. Pregnant women who reside in Guangzhou and who attend Guangzhou Women and Children's Medical Center (GWCMC) for antenatal care in early pregnancy (<20 weeks' gestation) are eligible for inclusion. Study recruitment commenced in February 2012, with an overall participation rate of 76...
March 20, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28314982/time-trends-of-cause-specific-mortality-among-resettlers-in-germany-1990-through-2009
#20
Simone Kaucher, Valentina Leier, Andreas Deckert, Bernd Holleczek, Christa Meisinger, Volker Winkler, Heiko Becher
Resettlers (in German: (Spät-)Aussiedler) form one of the biggest migrant groups in Germany. It is known that migrants have different mortality patterns compared to the autochthon population. In this paper, we combined data from three resettler cohorts and examined differences in mortality from non-communicable diseases among resettlers in Germany and the German population. Furthermore, we investigated time trends of cause-specific mortality for 20 years of follow-up and compared it with the German mortality rates...
March 17, 2017: European Journal of Epidemiology
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