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Epidemiological methods

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https://www.readbyqxmd.com/read/28441720/association-of-polyphenol-biomarkers-with-cardiovascular-disease-and-mortality-risk-a-systematic-review-and-meta-analysis-of-observational-studies
#1
REVIEW
Johanna Rienks, Janett Barbaresko, Ute Nöthlings
Epidemiologic studies have suggested an inverse association between flavonoids and cardiovascular disease (CVD). However, the results might have been influenced by the use of dietary assessment methods, which are error prone. The aim of this paper was to systematically review and analyse the literature for evidence of associations between polyphenol biomarkers and CVD and mortality risk in observational studies. Eligible studies were identified through PubMed, Web of Science, and reference lists. Multivariable adjusted associations were extracted...
April 22, 2017: Nutrients
https://www.readbyqxmd.com/read/28441422/automated-detection-of-hospital-outbreaks-a-systematic-review-of-methods
#2
Brice Leclère, David L Buckeridge, Pierre-Yves Boëlle, Pascal Astagneau, Didier Lepelletier
OBJECTIVES: Several automated algorithms for epidemiological surveillance in hospitals have been proposed. However, the usefulness of these methods to detect nosocomial outbreaks remains unclear. The goal of this review was to describe outbreak detection algorithms that have been tested within hospitals, consider how they were evaluated, and synthesize their results. METHODS: We developed a search query using keywords associated with hospital outbreak detection and searched the MEDLINE database...
2017: PloS One
https://www.readbyqxmd.com/read/28441061/precisely-where-are-we-going-charting-the-new-terrain-of-precision-prevention
#3
Karen M Meagher, Michelle L McGowan, Richard A Settersten, Jennifer R Fishman, Eric T Juengst
In addition to genetic data, precision medicine research gathers information about three factors that modulate gene expression: lifestyles, environments, and communities. The relevant research tools-epidemiology, environmental assessment, and socioeconomic analysis-are those of public health sciences rather than molecular biology. Because these methods are designed to support inferences and interventions addressing population health, the aspirations of this research are expanding from individualized treatment toward precision prevention in public health...
April 24, 2017: Annual Review of Genomics and Human Genetics
https://www.readbyqxmd.com/read/28440974/risk-estimation-for-lung-cancer-in-libya-analysis-based-on-standardized-morbidity-ratio-poisson-gamma-model-bym-model-and-mixture-model
#4
Maryam Ahmed Alhdiri, Nor Azah Samat, Zulkifley Mohamed
Cancer is the most rapidly spreading disease in the world, especially in developing countries, including Libya. Cancer represents a significant burden on patients, families, and their societies. This disease can be controlled if detected early. Therefore, disease mapping has recently become an important method in the fields of public health research and disease epidemiology. The correct choice of statistical model is a very important step to producing a good map of a disease. Libya was selected to perform this work and to examine its geographical variation in the incidence of lung cancer...
March 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28440524/-clinical-epidemiological-characteristics-and-change-trend-of-upper-gastrointestinal-bleeding-over-the-past-15-years
#5
Jinping Wang, Yi Cui, Jinhui Wang, Baili Chen, Yao He, Minhu Chen
OBJECTIVE: To investigate the clinical epidemiology change trend of upper gastrointestinal bleeding (UGIB) over the past 15 years. METHODS: Consecutive patients who was diagnosed as continuous UGIB in the endoscopy center of The First Affiliated Hospital of Sun-Yat University during the period from 1 January 1997 to 31 December 1998 and the period from 1 January 2012 to 31 December 2013 were enrolled in this study. Their gender, age, etiology, ulcer classification, endoscopic treatment and hospitalization mortality were compared between two periods...
April 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28439188/next-generation-sequencing-reveals-high-prevalence-of-brca1-and-brca2-variants-of-unknown-significance-in-early-onset-breast-cancer-in-african-american-women
#6
Luisel Ricks-Santi, J Tyson McDonald, Bert Gold, Michael Dean, Nicole Thompson, Muneer Abbas, Bradford Wilson, Yasmine Kanaan, Tammey J Naab, Georgia Dunston
BACKGROUND: Variants of unknown significance (VUSs) have been identified in BRCA1 and BRCA2 and account for the majority of all identified sequence alterations. Notably, VUSs occur disproportionately in people of African descent hampering breast cancer (BCa) management and prevention efforts in the population. Our study sought to identify and characterize mutations associated with increased risk of BCa at young age. METHODS: In our study, the spectrum of mutations in BRCA1 and BRCA2 was enumerated in a cohort of 31 African American women of early age at onset breast cancer, with a family history of breast or cancer in general and/or with triple negative breast cancer...
2017: Ethnicity & Disease
https://www.readbyqxmd.com/read/28438522/detection-of-leishmania-infantum-dna-in-conjunctival-swabs-of-cats-by-quantitative-real-time-pcr
#7
Julia Cristina Benassi, Graziella U Benvenga, Helena Lage Ferreira, Vanessa F Pereira, Lara B Keid, Rodrigo Soares, Tricia Maria Ferreira de Sousa Oliveira
Although some studies have investigated the potential role of cats as a reservoir for Leishmania, their role in the epidemiology of visceral leishmaniasis (VL) is still poorly understood. Molecular diagnostic techniques are an important tool in VL diagnosis, and PCR shows high sensitivity and specificity for Leishmania spp. detection. Quantitative real-time PCR (qPCR) is a method that permits quantitative analysis of a large number of samples, resulting in more sensitive, accurate, and reproducible measurements of specific DNA present in the sample...
April 21, 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/28438409/health-workers-attitudes-perceptions-and-knowledge-of-influenza-immunization-in-lima-peru-a-mixed-methods-study
#8
Magdalena Bazán, Erika Villacorta, Gisella Barbagelatta, M Michelle Jimenez, Cecilia Goya, Rosario M Bartolini, Mary E Penny
BACKGROUND: Vaccination against seasonal influenza in health workers is recommended but coverage is variable. This study aimed to determine coverage of influenza vaccination among health workers in Lima, Peru in 2010; explore barriers and enabling elements for vaccination; and suggest strategies to improve coverage. METHODS: Qualitative interviews informed the development of a survey instrument that consisted of open and close-ended questions. Sub-analyses were done by occupational group and results were calculated as percentages for each possible response with confidence intervals of 95%...
April 21, 2017: Vaccine
https://www.readbyqxmd.com/read/28438374/validity-of-self-assessed-sexual-maturation-against-physician-assessments-and-hormone-levels
#9
Jorge E Chavarro, Deborah J Watkins, Myriam C Afeiche, Zhenzhen Zhang, Brisa N Sánchez, David Cantonwine, Adriana Mercado-García, Clara Blank-Goldenberg, John D Meeker, Martha María Téllez-Rojo, Karen E Peterson
OBJECTIVE: To compare self-report and physician assessments of sexual maturation against serum hormone markers to evaluate the hypothesis that the validity of self-assessed sexual maturation is underestimated in traditional validation studies. STUDY DESIGN: We adapted a self-assessment instrument that 248 Mexican children and adolescents, aged 8-13 years, completed. The participants were examined by a trained pediatrician and provided fasting blood samples for measurement of reproductive hormones (eg, testosterone, estradiol, sex hormone-binding globulin, inhibin B) and other hormones (eg, C-peptide, insulin-like growth factor 1, leptin, dehydroepiandrosterone sulfate) known to change during adolescence...
April 21, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28438225/meta-analysis-of-the-parasitic-phase-traits-of-haemonchus-contortus-infection-in-sheep
#10
Mathilde Saccareau, Guillaume Sallé, Christèle Robert-Granié, Tom Duchemin, Philippe Jacquiet, Alexandra Blanchard, Jacques Cabaret, Carole R Moreno
BACKGROUND: The parasitic nematode Haemonchus contortus shows highly variable life history traits. This highlights the need to have an average estimate and a quantification of the variation around it to calibrate epidemiological models. METHODS: This paper aimed to quantify the main life history traits of H. contortus and to identify explanatory factors affecting these traits using a powerful method based on a systematic review and meta-analysis of current literature...
April 24, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28438100/an-epidemiology-of-sexual-assault-among-elderly-women-in-the-mthatha-area-of-south-africa
#11
Banwari L Meel
Background South Africa has one of the highest rates of rape in the world, but this barely seems to surprise anyone. It is extremely disturbing, especially when children and elderly women are raped. Women and children are usually the weakest group in society physically, as well as the most exposed to abuse and neglect. It should be the responsibility of a civil society to protect these vulnerable groups from harm. Objective This study investigated the trend of rapes among elderly women in the Mthatha area of South Africa...
April 2017: Medicine, Science, and the Law
https://www.readbyqxmd.com/read/28438095/arcobacter-an-emerging-food-borne-zoonotic-pathogen-its-public-health-concerns-and-advances-in-diagnosis-and-control-a-comprehensive-review
#12
Thadiyam Puram Ramees, Kuldeep Dhama, Kumaragurubaran Karthik, Ramswaroop Singh Rathore, Ashok Kumar, Mani Saminathan, Ruchi Tiwari, Yashpal Singh Malik, Raj Kumar Singh
Arcobacter has emerged as an important food-borne zoonotic pathogen, causing sometimes serious infections in humans and animals. Newer species of Arcobacter are being incessantly emerging (presently 25 species have been identified) with novel information on the evolutionary mechanisms and genetic diversity among different Arcobacter species. These have been reported from chickens, domestic animals (cattle, pigs, sheep, horses, dogs), reptiles (lizards, snakes and chelonians), meat (poultry, pork, goat, lamb, beef, rabbit), vegetables and from humans in different countries...
April 25, 2017: Veterinary Quarterly
https://www.readbyqxmd.com/read/28436477/identification-of-risk-factors-in-epidemiologic-study-based-on-roc-curve-and-network
#13
Jiao Jin, Shixin Zhou, Qiujin Xu, Jinbing An
This article proposes a new non-parametric approach for identification of risk factors and their correlations in epidemiologic study, in which investigation data may have high variations because of individual differences or correlated risk factors. First, based on classification information of high or low disease incidence, we estimate Receptor Operating Characteristic (ROC) curve of each risk factor. Then, through the difference between ROC curve of each factor and diagonal, we evaluate and screen for the important risk factors...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28436212/cross-sectional-and-longitudinal-epidemiological-studies-of-internet-gaming-disorder-a-systematic-review-of-the-literature
#14
REVIEW
Satoko Mihara, Susumu Higuchi
AIM: The diagnostic criteria of Internet Gaming Disorder (IGD) have been included in section III of DSM-5. This study aims to systematically review both cross-sectional and longitudinal epidemiological studies of IGD. METHODS: All publications included in PubMed and PsychINFO up to May 2016 were systematically searched to identify cross-sectional studies on prevalence and longitudinal studies of IGD. In the process of identification, articles in non-English languages, and studies focusing solely on the use of gaming were excluded, and those meeting the methodological requirements set by this review were included...
April 24, 2017: Psychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/28435659/an-investigative-framework-to-facilitate-epidemiological-thinking-during-herd-problem-solving
#15
Simon J More, Michael L Doherty, Luke O'Grady
Veterinary clinicians and students commonly use diagnostic approaches appropriate for individual cases when conducting herd problem-solving. However, these approaches can be problematic, in part because they make limited use of epidemiological principles and methods, which has clear application during the investigation of herd problems. In this paper, we provide an overview of diagnostic approaches that are used when investigating individual animal cases, and the challenges faced when these approaches are directly translated from the individual to the herd...
2017: Irish Veterinary Journal
https://www.readbyqxmd.com/read/28435336/anterior-cruciate-ligament-injury-reinjury-in-alpine-ski-racing-a-narrative-review
#16
REVIEW
Matthew J Jordan, Per Aagaard, Walter Herzog
The purpose of the present review was to: 1) provide an overview of the current understanding on the epidemiology, etiology, risk factors, and prevention methods for anterior cruciate ligament (ACL) injury in alpine ski racing; and 2) provide an overview of what is known pertaining to ACL reinjury and return to sport after ACL injury in alpine ski racing. Given that most of the scientific studies on ACL injuries in alpine ski racing have been descriptive, and that very few studies contributed higher level scientific evidence, a nonsystematic narrative review was employed...
2017: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/28435100/montreal-accord-on-patient-reported-outcomes-use-series-paper-5-patient-reported-outcomes-pro-can-be-linked-to-epidemiologic-measures-to-monitor-populations-and-inform-public-health-decisions
#17
Hiroshi Mamiya, Lisa M Lix, William Gardner, Susan J Bartlett, Sara Ahmed, David Buckeridge
BACKGROUND: Comprehensive picture of population health status can be captured by the incorporation of patient reported outcome measures into population health monitoring. OBJECTIVE: To identify current state, opportunities, and future research related to the utilization of patient reported outcome measures for population health monitoring in Canada. DISCUSSIONS: Patient reported outcome measures can help to identify community health needs in public health topics including injury, chronic disease, and communicable disease...
April 20, 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/28434936/defining-a-research-agenda-to-address-the-converging-epidemics-of-tuberculosis-and-diabetes-part-1-epidemiology-and-clinical-management
#18
REVIEW
Julia A Critchley, Blanca I Restrepo, Katharina Ronacher, Anil Kapur, Andrew A Bremer, Larry S Schlesinger, Randall Basaraba, Hardy Kornfeld, Reinout van Crevel
There is growing interest in the interaction between type 2 diabetes (DM) and tuberculosis (TB), but many research questions remain unanswered. Epidemiologists, basic scientists and clinical experts recently convened and identified priorities. This is the first of two reviews on this topic, summarising priority areas of research with regard to epidemiology, clinical management and public health. First, from an epidemiological point of view, more study is needed to determine the importance of transient hyperglycemia in TB patients, and on the importance of DM for the global epidemic of multi-drug resistant (MDR)-TB...
April 19, 2017: Chest
https://www.readbyqxmd.com/read/28433864/arsenic-metabolism-and-cancer-risk-a-meta-analysis
#19
REVIEW
Brenda Gamboa-Loira, Mariano E Cebrián, Francisco Franco-Marina, Lizbeth López-Carrillo
OBJECTIVE: To describe the studies that have reported association measures between risk of cancer and the percentage distribution of urinary inorganic arsenic (iAs) metabolites by anatomical site, in non-ecological epidemiological studies. METHODS: Studies were identified in the PubMed database in the period from 1990 to 2015. Inclusion criteria were: non-ecological epidemiological study, with histologically confirmed cancer cases, reporting the percentage distribution of inorganic arsenic (iAs), monomethylated (MMA) and dimethylated (DMA) metabolites, as well as association measures with confidence intervals (CI) between cancer and %iAs and/or %MMA and/or %DMA...
April 20, 2017: Environmental Research
https://www.readbyqxmd.com/read/28433811/rapid-and-sensitive-detection-of-salmonid-alphavirus-using-taqman-real-time-pcr
#20
Wen Shi, Aochen Song, Shuai Gao, Yuting Wang, Lijie Tang, Yigang Xu, Tong Ren, Yijing Li, Min Liu
Salmonid alphavirus (SAV) infection has led to the spread of salmon pancreas disease (PD) and sleeping disease (SD) to salmonids in several countries in Europe, resulting in tremendous economic losses to the fish farming industry. Recently, with increases in the fish import trade, many countries in which SAV has been unreported, such as China, may be seriously threatened by these diseases. It is therefore necessary to develop efficient detection methods for the prevention and diagnosis of SAV infection. In this study, a rapid and sensitive TaqMan real-time PCR method was established and assessed for this purpose...
April 19, 2017: Molecular and Cellular Probes
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