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Epidemiological methods

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https://www.readbyqxmd.com/read/29233253/assessment-of-hiv-molecular-surveillance-capacity-in-the-european-union-2016
#1
Patrick Keating, Anastasia Pharris, Katrin Leitmeyer, Stefania De Angelis, Annemarie Wensing, Andrew J Amato-Gauci, Eeva Broberg
IntroductionExpanding access to HIV antiretroviral treatment is expected to decrease HIV incidence and acquired immunodeficiency syndrome (AIDS) mortality. However, this may also result in increased HIV drug resistance (DR). Better monitoring and surveillance of HIV DR is required to inform treatment regimens and maintain the long term effectiveness of antiretroviral drugs. As there is currently no formal European Union (EU)-wide collection of HIV DR data, this study aimed to assess the current HIV molecular surveillance capacity in EU/European Economic Area (EEA) countries in order to inform the planning of HIV DR monitoring at EU level...
December 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/29232388/more-than-the-eyes-can-see-the-worrying-scenario-of-canine-leishmaniasis-in-the-brazilian-side-of-the-triple-border
#2
Vanete Thomaz Soccol, Aline Kuhn Sbruzzi Pasquali, Eliane Maria Pozzolo, André de Souza Leandro, Luciana Chiyo, Rafael Antunes Baggio, Mario Sergio Michaliszyn, Carlos Silva, Patrícia Hoerner Cubas, Ricardo Peterlle, Otacilio Lopes de Souza Paz, Ivana Lucia Belmonte, Alceu Bisetto-Junior
A cross-sectional epidemiological study in the extreme-west of the state of Paraná was carried out to access the prevalence, distribution, and risk variables of canine Visceral Leishmaniases (cVL). This study was conducted in three areas, two cities of far west of Parana state: Foz do Iguaçu (FI) and Santa Terezinha de Itaipu (STI), and along two transects between these two municipalities. To sample the entire urban area, the cities (FI and STI) were divided into a grid of squares of 400 m2 (patch). Among the 526 patches, 123 in FI, 40 in the transects and 33 in STI were selected according to the 'worst scenario' criterion...
2017: PloS One
https://www.readbyqxmd.com/read/29231899/do-individual-and-neighborhood-characteristics-influence-perceived-air-quality
#3
Séverine Deguen, Manon Padilla, Cindy Padilla, Wahida Kihal-Talantikite
Background: Despite improvements, air pollution still remains a major public health issue. Numerous epidemiological studies have demonstrated the adverse health effects of air pollution exposure based on modeled measures, but only a few have considered the health impact of perceived air quality. Improving our knowledge of individual perceptions is crucial to defining targeted actions and promoting appropriate intervention measures. Our objective is to investigate the relationship between subjective and objective measures of air pollution and to focus on how individual characteristics combined with the neighborhood socioeconomic deprivation index, measured at a fine spatial scale, may or may not alter this relationship...
December 12, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29230375/the-impact-of-choosing-words-carefully-an-online-investigation-into-imaging-reporting-strategies-and-best-practice-care-for-low-back-pain
#4
Emma L Karran, Yasmin Medalian, Susan L Hillier, G Lorimer Moseley
Background: Low back pain clinical practice guidelines consistently recommend against the routine ordering of spinal imaging; however, imaging is frequently requested in primary care, without evidence of benefit. Imaging reports frequently identify degenerative features which are likely to be interpreted as 'abnormal', despite their high prevalence in symptom-free individuals. The aim of this study was to investigate whether post-imaging back-related perceptions are influenced by providing prior information about normal findings, and to compare the effect of receiving imaging results with best practice care (without imaging)...
2017: PeerJ
https://www.readbyqxmd.com/read/29229287/-craniometrical-study-of-the-species-complex-of-meriones-shawii-grandis-mammalia-rodentia-in-morocco-in-algeria-and-in-tunisia
#5
Yassine Djelaila, Christiane Denys, Emmanuelle Stoetzel, Raphaël Cornette, Aude Lalis, Malika Adamou-Djerbaoui, Mohamed Boukhemza
In North Africa, the rodents of the species complex Meriones shawii-grandis have a considerable ecological, economic and epidemiological importance. Until now, the systematics of these species was subject to discussion due to the presence of populations displaying high morphological variability. By means of an approach of traditional morphometrics based on cranial distances and by using the method of the log shape-ratio, we attempt to characterize morphologically these two taxa. The results show significant differences in size and shape between the specimens of Morocco, on the one hand, and those of Algeria and Tunisia, on the other hand...
December 8, 2017: Comptes Rendus Biologies
https://www.readbyqxmd.com/read/29229084/serological-study-of-bordetella-pertussis-mycoplasma-pneumonia-and-chlamydia-pneumonia-in-iranian-hajj-pilgrims-with-prolonged-cough-illnesses-a-follow-up-study
#6
Masoud Rahimian, Mahdi HosseiniB
INTRODUCTION: Hajj pilgrimage is the biggest and longest mass gathering in the Muslim world. Annually, about 50% of more than 2.5 million pilgrims participating in this ritual get involved in severe devastating coughs. Most coughs continue, so the pilgrims turn back home and transmit them to family members and other people. Despite the high prevalence of coughs for many years, what causes them remains unknown. Considering the pertussis-like clinical picture of the so-called "hajj coughs", the researchers conducted a study to measure antibodies against three known common atypical bacteria, namely Bordetella Pertussis, Chlamydia Pneumonia and Mycoplasma Pneumonia...
November 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/29228622/comparison-between-liver-resection-and-liver-transplantation-on-outcomes-in-patients-with-solitary-hepatocellular-carcinoma-meeting-unos-criteria-a-population-based-study-of-the-seer-database
#7
Anli Yang, Weiqiang Ju, Xiaopeng Yuan, Ming Han, Xiaoping Wang, Zhiyong Guo, Xiaoli Wei, Dongping Wang, Xiaofeng Zhu, Linwei Wu, Xiaoshun He
Liver resection (LR) and liver transplantation (LT) are potential curative treatment methods for early hepatocellular carcinoma (HCC). However, it is controversial which treatment is more beneficial to patients with solitary HCC meeting the United Network for Organ Sharing (UNOS) criteria (single lesion, diameter≤50mm, no vascular invasion, no extrahepatic metastasis). We retrieved patients with solitary HCC meeting UNOS criteria diagnosed between 2004-2013 from the Surveillance Epidemiology and End Results (SEER) database...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29228595/age-specific-impact-on-the-survival-of-gastric-cancer-patients-with-distant-metastasis-an-analysis-of-seer-database
#8
Xinxing Li, Weijun Wang, Canping Ruan, Yi Wang, Haolu Wang, Xiaowen Liang, Yanping Sun, Zhiqian Hu
The age-specific impact on the survival of gastric cancer patients with distant metastasis is still unclear. In this study, we identified 11, 299 gastric cancer patients with distant metastasis between 2004 and 2013 from Surveillance, Epidemiology, and End Results population-based dataset. Patients were divided into young (≤60) and elderly groups (>60). Kaplan-Meier methods and multivariable Cox regression were used for the analysis of long-term survival outcomes and risk factors. There were significant differences between the two groups in terms of race, primary site, grade, histologic type, surgery, marital status and clinical T stage (P<0...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29228472/the-epidemiology-of-stroke-in-africa-a-systematic-review-of-existing-methods-and-new-approaches
#9
REVIEW
Mayowa Owolabi, Paul Olowoyo, Femi Popoola, Daniel Lackland, Carolyn Jenkins, Oyedunni Arulogun, Rufus Akinyemi, Odunayo Akinyemi, Onoja Akpa, Olanrewaju Olaniyan, Ezinne Uvere, Issa Kehinde, Anbesaw Selassie, Mulugeta Gebregziabher, Raelle Tagge, Bruce Ovbiagele
Accurate epidemiological surveillance of the burden of stroke is direly needed to facilitate the development and evaluation of effective interventions in Africa. The authors therefore conducted a systematic review of the methodology of stroke epidemiological studies conducted in Africa from 1970 to 2017 using gold standard criteria obtained from landmark epidemiological publications. Of 1330 articles extracted, only 50 articles were eligible for review grouped under incidence, prevalence, case-fatality, health-related quality of life, and disability-adjusted life-years studies...
December 11, 2017: Journal of Clinical Hypertension
https://www.readbyqxmd.com/read/29228093/correctness-of-self-reported-task-durations-a-systematic-review
#10
Jean A Pulido, Lope H Barrero, Svend Erik Mathiassen, Jack T Dennerlein
Objectives: Duration of tasks in a job is an essential interest in occupational epidemiology. Such duration is frequently measured using self-reports, which may, however, be associated with both bias and random errors. The present systematic literature review examines the correctness of self-reported durations of tasks, i.e. the extent to which they differ from more valid reference data due to either systematic or random errors, and factors influencing this correctness, with particular emphasis on the assessment of exposures of relevance to musculoskeletal disorders...
December 6, 2017: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/29227465/acute-pharyngitis-associated-with-streptococcus-dysgalactiae-subspecies-equisimilis-in-children
#11
Fujio Kakuya, Takahiro Kinebuchi, Hitoshi Okubo, Kumihiro Matsuo, Mami Kuroda, Hiroaki Fujiyasu
BACKGROUND AND OBJECTIVES: The importance of Streptococcus dysgalactiae subsp. equisimilis (SDSE) in causing sporadic pharyngitis in children remains controversial. The aims of this study were; (1) to report the incidence and, (2) to compare the epidemiologic and clinical features of patients with SDSE to those with Streptococcus pyogenes (SP). METHODS: A prospective study was conducted on acute pharyngitis associated with SDSE in children over a 2-year period. SDSE was identified using a phenotypic method, M protein gene (emm) analysis, and matrix-assisted laser desorption ionization-time of flight mass spectrometry...
December 8, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29227254/-modern-approaches-to-diagnosis-and-treatment-of-tumors-of-female-genitals-of-children-and-adolescents-review
#12
A Solopova, A Makatsaryia, O Yakovleva, V Moskvicheva
The article discusses the features of epidemiology, morphology, clinical course and modern principles of diagnostics and treatment of tumors of female genitals of children and adolescents. Special attention is paid to ovarian germ cell tumors. The use of immunohistochemical and tumor markers enables the differential diagnosis among malignant ovarian germ cell tumors. Nowadays surgical methods, chemotherapy and radiation therapy are applied in treatment of tumors of female genitals. The main standard of surgical operation of ovarian tumors is removal of appendages on the side of the affection...
November 2017: Georgian Medical News
https://www.readbyqxmd.com/read/29226352/tutorial-on-kernel-estimation-of-continuous-spatial-and-spatiotemporal-relative-risk
#13
Tilman M Davies, Jonathan C Marshall, Martin L Hazelton
Kernel smoothing is a highly flexible and popular approach for estimation of probability density and intensity functions of continuous spatial data. In this role, it also forms an integral part of estimation of functionals such as the density-ratio or "relative risk" surface. Originally developed with the epidemiological motivation of examining fluctuations in disease risk based on samples of cases and controls collected over a given geographical region, such functions have also been successfully used across a diverse range of disciplines where a relative comparison of spatial density functions has been of interest...
December 11, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/29226228/seminar-program-for-postgraduate-specialty-training-in-general-practice-proposal-for-a-5-year-thematic-catalogue
#14
Susanne Sommer, Erika Baum, Julia Magez, Jean-Francois Chenot, Gesine Weckmann, Jost Steinhäuser, Susanne Heim, Dagmar Schneider, Stephan Fuchs
Introduction: In different German regions, seminar programs have been conducted for General practice residents. In each region, selection and teaching of learning content is conducted in a different manner. So far, no structured, standardized curriculum has been implemented nationwide. We have investigated, if the development of a common 5-year program of learning topics is conceivable between the different university departments of General practice in Germany. Method: The seminar program working group of the DEGAM (German College of General Practitioners and Family Physicians) has conducted an online survey based on information gathered via preliminary telephone conference (n=7; physicians with postgraduate teaching experience) among all German university departments of General Practice and two non-university teaching institutions, identified via the internet...
2017: GMS Journal for Medical Education
https://www.readbyqxmd.com/read/29226067/recent-developments-in-mendelian-randomization-studies
#15
REVIEW
Jie Zheng, Denis Baird, Maria-Carolina Borges, Jack Bowden, Gibran Hemani, Philip Haycock, David M Evans, George Davey Smith
Purpose of Review: Mendelian randomization (MR) is a strategy for evaluating causality in observational epidemiological studies. MR exploits the fact that genotypes are not generally susceptible to reverse causation and confounding, due to their fixed nature and Mendel's First and Second Laws of Inheritance. MR has the potential to provide information on causality in many situations where randomized controlled trials are not possible, but the results of MR studies must be interpreted carefully to avoid drawing erroneous conclusions...
2017: Current Epidemiology Reports
https://www.readbyqxmd.com/read/29225921/geo-epidemiology-of-temporal-artery-biopsy-positive-giant-cell-arteritis-in-australia-and-new-zealand-is-there-a-seasonal-influence
#16
Elisabeth De Smit, Linda Clarke, Paul G Sanfilippo, Tony R Merriman, Matthew A Brown, Catherine L Hill, Alex W Hewitt
Objective: Previous studies, although inconclusive, have suggested possible associations of environmental risk factors with the development of giant cell arteritis (GCA). We aim to investigate seasonal influence on the incidence of GCA across Australia and New Zealand. Methods: In establishing an international study to investigate the molecular aetiology of GCA, archived temporal artery biopsy (TAB) specimens primarily from Australia and New Zealand were obtained...
2017: RMD Open
https://www.readbyqxmd.com/read/29225714/incorporating-high-dimensional-exposure-modelling-into-studies-of-air-pollution-and-health
#17
Yi Liu, Gavin Shaddick, James V Zidek
Performing studies on the risks of environmental hazards on human health requires accurate estimates of exposures that might be experienced by the populations at risk. Often there will be missing data and in many epidemiological studies, the locations and times of exposure measurements and health data do not match. To a large extent this will be due to the health and exposure data having arisen from completely different data sources and not as the result of a carefully designed study, leading to problems of both 'change of support' and 'misaligned data'...
2017: Statistics in Biosciences
https://www.readbyqxmd.com/read/29225447/engaging-african-americans-in-research-the-recruiter-s-perspective
#18
Nadine J Barrett, Kearston L Ingraham, Tracey Vann Hawkins, Patricia G Moorman
Purpose: To examine barriers recruiters encounter when enrolling African American study participants, identify motivating factors to increase research participation, and provide recommendations to facilitate successful minority recruitment. Background: Recruiters are often the first point of contact between the research study and potential African American participants. While challenges in enrolling African Americans into clinical and epidemiologic research has been reported in numerous studies the non-physician recruiter's role as a determinant of overall participation rates has received minimal attention...
2017: Ethnicity & Disease
https://www.readbyqxmd.com/read/29224194/establishment-and-evaluation-of-an-indirect-immunofluorescence-assay-for-the-detection-of-salmonid-alphavirus
#19
S Gao, W Shi, Y T Wang, M T Guo, K X Duan, A C Song, G H Lian, Tong Ren, Y J Li, L J Tang, L Sun, M Liu
Salmonid alphaviruses (SAV) severely infects farmed salmonids and rainbow trout. Owing to the recent increase in fish import trade, several SAV-unreported countries, such as China, may face serious threat of this infection. Thus, it is necessary to develop efficient detection methods for the prevention and diagnosis of SAV infection. In this study, we selected a conserved segment of the SAV E1 protein as a target immunogen for the preparation of monoclonal antibodies (mAbs) specific to SAV. A sensitive indirect immunofluorescence (IF) method was developed using 26E9C2 mAb that detected E1 protein and identified subtypes 1, 2 and 5 of SAV...
December 9, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/29224097/menopause-estrogens-and-glucose-homeostasis-in-women
#20
Franck Mauvais-Jarvis
Randomized trials suggest that menopausal hormone therapy (MHT) prevents type 2 diabetes. Still, the mechanisms of these antidiabetic effects are a matter of controversy. This chapter provides an analysis of epidemiological and clinical evidence and proposes a mechanism for the effect of menopause and MHT on type 2 diabetes development and prevention. It discusses the beneficial role of estradiol on glucose homeostasis that is lost at menopause and improved by MHT, which delays type 2 diabetes. This chapter aims to reconcile differences among studies of the effect of menopause and MHT formulations on type 2 diabetes and argues that discrepancies arise from physiological differences in methods used to assess glucose homeostasis...
2017: Advances in Experimental Medicine and Biology
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