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Surveillance bias

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https://www.readbyqxmd.com/read/28226252/linkage-of-traffic-crash-and-hospitalization-records-with-limited-identifiers-for-enhanced-public-health-surveillance
#1
Sarah Conderino, Lawrence Fung, Slavenka Sedlar, Jennifer M Norton
BACKGROUND: Motor vehicle traffic (MVT) crashes kill or seriously injure approximately 4250 people in New York City (NYC) each year. Traditionally, NYC surveillance practices use hospitalization and crash data separately to monitor trends in MVT-related injuries, but key information linking crash circumstances to health outcomes is lost when analyzing these data sources in isolation. Our objective was to match crash reports to hospitalization records to create a traffic injury surveillance dataset that can be used to describe crash circumstances and related injury outcomes...
February 19, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28202099/vibrio-alginolyticus-infections-in-the-usa-1988-2012
#2
K M Jacobs Slifka, A E Newton, B E Mahon
Vibrio alginolyticus causes soft tissue and bloodstream infection; little systematically collected clinical and epidemiological information is available. In the USA, V. alginolyticus infections are reported to the Cholera and Other Vibrio Illness Surveillance system. Using data from 1988 to 2012, we categorised infections using specimen source and exposure history, analysed case characteristics, and calculated incidence rates using US Census Bureau data. Most (96%) of the 1331 V. alginolyticus infections were from coastal states...
February 16, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28198645/three-decades-of-dengue-surveillance-in-five-highly-endemic-south-east-asian-countries
#3
T A Wartel, A Prayitno, S R S Hadinegoro, M R Capeding, U Thisyakorn, N H Tran, A Moureau, A Bouckenooghe, J Nealon, A-F Taurel
We described and quantified epidemiologic trends in dengue disease burden in 5 Asian countries (Indonesia, Thailand, Malaysia, Philippines, and Vietnam) and identified and estimated outbreaks impact over the last 3 decades. Dengue surveillance data from 1980 to 2010 were retrieved from DengueNet and from World Health Organization sources. Trends in incidence, mortality, and case fatality rate (CFR) were systematically analyzed using annual average percent change (AAPC), and the contribution of epidemic years identified over the observation period was quantified...
January 2017: Asia-Pacific Journal of Public Health
https://www.readbyqxmd.com/read/28197206/survival-after-abdominoperineal-and-sphincter-preserving-resection-in-nonmetastatic-rectal-cancer-a-population-based-time-trend-and-propensity-score-matched-seer-analysis
#4
Rene Warschkow, Sabrina M Ebinger, Walter Brunner, Bruno M Schmied, Lukas Marti
Background. Abdominoperineal resection (APR) has been associated with impaired survival in nonmetastatic rectal cancer patients. It is unclear whether this adverse outcome is due to the surgical procedure itself or is a consequence of tumor-related characteristics. Study Design. Patients were identified from the Surveillance, Epidemiology, and End Results database. The impact of APR compared to coloanal anastomosis (CAA) on survival was assessed by Cox regression and propensity-score matching. Results. In 36,488 patients with rectal cancer resection, the APR rate declined from 31...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/28196830/the-benefits-of-data-linkage-for-firefighter-injury-surveillance
#5
Shannon A Widman, Michael T LeVasseur, Loni P Tabb, Jennifer A Taylor
BACKGROUND: While survey data are available for national estimates of fire events and firefighter fatalities, data on firefighter injury at the national and local levels remain incomplete and unreliable. Data linkage provides a vehicle to maximise case detection and deepen injury description for the US fire service. METHODS: By linking departmental Human Resources records, despatch data, workers' compensation and first reports of injury, researchers were able to describe reported non-fatal injuries to 3063 uniformed members of the Philadelphia Fire Department (PFD), for the period of 2005 through 2013...
February 14, 2017: Injury Prevention: Journal of the International Society for Child and Adolescent Injury Prevention
https://www.readbyqxmd.com/read/28196023/the-more-the-better-lower-rate-of-stage-migration-and-better-survival-in-patients-with-retrieval-of-20-or-more-regional-lymph-nodes-in-pancreatic-cancer-a-population-based-propensity-score-matched-and-trend-seer-analysis
#6
Rene Warschkow, Bernhard Widmann, Ulrich Beutner, Lukas Marti, Thomas Steffen, Marc Schiesser, Bruno M Schmied
OBJECTIVE: The aim of this study was to assess the influence of regional lymph node (RLN) retrieval on stage migration and survival in pancreatic cancer. METHODS: A total of 7,685 stage I and II pancreatic cancer patients were identified in the Surveillance, Epidemiology, and End Results database in 2004-2011. The impact of RLN was assessed using Cox regression, propensity score methods, and joinpoint regression. RESULTS: In 3,079 patients, 1 to 10 RLNs were retrieved; in 2,799 patients, 11 to 19 RLNs, and in 1,807 patients, 20+ RLNs...
February 14, 2017: Pancreas
https://www.readbyqxmd.com/read/28146578/alncrna-hulc-as-an-effective-biomarker-for-surveillance-of-the-outcome-of-cancer-a-meta-analysis
#7
Xiaoliang Chen, Jinbo Lin, Yi Liu, Ji Peng, Yong Cao, Zhan Su, Tieqiang Wang, Jinquan Cheng, Dongsheng Hu
PURPOSE: High expression of highly upregulated in iver cancer (HULC) has been found associated with increased metastasis and poor prognosis with cancer. This meta-analysis aimed to determine the pooled effect of HULC on metastasis and prognosis of cancers. METHOD: The studies were accessed using multiple databases. RevMan5.3 and STATA14.0 were used to estimate pooled effects, the heterogeneity among studies, and publication bias for the association of HULC and overall survival (OS)...
2017: PloS One
https://www.readbyqxmd.com/read/28129893/a-systematic-approach-to-discussing-active-surveillance-with-patients-with-low-risk-prostate-cancer
#8
Behfar Ehdaie, Melissa Assel, Nicole Benfante, Deepak Malhotra, Andrew Vickers
BACKGROUND: Physicians report difficulty convincing patients with prostate cancer about the merits of active surveillance (AS); as a result, a majority of patients unnecessarily choose to undergo radical treatment. OBJECTIVE: To develop and evaluate a systematic approach for physicians to counsel patients with low-risk prostate cancer to increase acceptance of AS. DESIGN, SETTING, AND PARTICIPANTS: A systematic counseling approach was developed and piloted in one clinic...
January 24, 2017: European Urology
https://www.readbyqxmd.com/read/28125861/immediate-referral-to-colposcopy-versus-cytological-surveillance-for-minor-cervical-cytological-abnormalities-in-the-absence-of-hpv-test
#9
REVIEW
Maria Kyrgiou, Ilkka E J Kalliala, Anita Mitra, Christina Fotopoulou, Sadaf Ghaem-Maghami, Pierre Pl Martin-Hirsch, Margaret Cruickshank, Marc Arbyn, Evangelos Paraskevaidis
BACKGROUND: A significant number of women are diagnosed with minor cytological abnormalities on cervical screening. Many authorities recommend surveillance as spontaneous regression might occur. However, attendance for cytological follow-up decreases with time and might put some women at risk of developing invasive disease. OBJECTIVES: To assess the optimum management strategy for women with minor cervical cytological abnormalities (atypical squamous cells of undetermined significance - ASCUS or low-grade squamous intra-epithelial lesions - LSIL) at primary screening in the absence of HPV (human papillomavirus) DNA test...
January 26, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28122597/beyond-the-entomological-inoculation-rate-characterizing-multiple-blood-feeding-behavior-and-plasmodium-falciparum-multiplicity-of-infection-in-anopheles-mosquitoes-in-northern-zambia
#10
Smita Das, Mbanga Muleba, Jennifer C Stevenson, Julia C Pringle, Douglas E Norris
BACKGROUND: A commonly used measure of malaria transmission intensity is the entomological inoculation rate (EIR), defined as the product of the human biting rate (HBR) and sporozoite infection rate (SIR). The EIR excludes molecular parameters that may influence vector control and surveillance strategies. The purpose of this study was to investigate Anopheles multiple blood feeding behavior (MBF) and Plasmodium falciparum multiplicity of infection (MOI) within the mosquito host in Nchelenge District, northern Zambia...
January 26, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28117136/use-of-fev1-in-cystic-fibrosis-epidemiologic-studies-and-clinical-trials-a-statistical-perspective-for-the-clinical-researcher
#11
EDITORIAL
Rhonda Szczesniak, Sonya L Heltshe, Sanja Stanojevic, Nicole Mayer-Hamblett
BACKGROUND: Forced expiratory volume in 1s (FEV1) is an established marker of cystic fibrosis (CF) disease progression that is used to capture clinical course and evaluate therapeutic efficacy. The research community has established FEV1 surveillance data through a variety of observational data sources such as patient registries, and there is a growing pipeline of new CF therapies demonstrated to be efficacious in clinical trials by establishing improvements in FEV1. RESULTS: In this review, we summarize from a statistical perspective the clinical relevance of FEV1 based on its association with morbidity and mortality in CF, its role in epidemiologic studies of disease progression and comparative effectiveness, and its utility in clinical trials...
January 20, 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/28115177/prediction-of-lymph-node-parasite-load-from-clinical-data-in-dogs-with-leishmaniasis-an-application-of-radial-basis-artificial-neural-networks
#12
Rafaela Beatriz Pintor Torrecilha, Yuri Tani Utsunomiya, Luís Fábio da Silva Batista, Anelise Maria Bosco, Cáris Maroni Nunes, Paulo César Ciarlini, Márcia Dalastra Laurenti
Quantification of Leishmania infantum load via real-time quantitative polymerase chain reaction (qPCR) in lymph node aspirates is an accurate tool for diagnostics, surveillance and therapeutics follow-up in dogs with leishmaniasis. However, qPCR requires infrastructure and technical training that is not always available commercially or in public services. Here, we used a machine learning technique, namely Radial Basis Artificial Neural Network, to assess whether parasite load could be learned from clinical data (serological test, biochemical markers and physical signs)...
January 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28111235/comparison-of-segmentectomy-and-lobectomy-in-stage-ia-adenocarcinomas-1-and-%C3%A2-2-cm-a-brief-report
#13
Ze-Rui Zhao, Dong-Rong Situ, Rainbow W H Lau, Tony S K Mok, George G Chen, Malcolm J Underwood, Calvin S H Ng
INTRODUCTION: Recent studies have suggested that segmentectomy may be an acceptable alternative treatment to lobectomy, for surgical management of smaller lung adenocarcinomas. The objective of this study was to compare survival after lobectomy and segmentectomy among patients with pathological stage IA adenocarcinoma categorized as the new T1b (>10 to ≤20 mm) according to the eighth TNM system. METHODS: In total, 7,989 patients were identified from the Surveillance, Epidemiology, and End Results registry...
January 19, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28104317/a-two-phase-sampling-survey-for-nonresponse-and-its-paradata-to-correct-nonresponse-bias-in-a-health-surveillance-survey
#14
G Santin, L Bénézet, B Geoffroy-Perez, J Bouyer, A Guéguen
BACKGROUND: The decline in participation rates in surveys, including epidemiological surveillance surveys, has become a real concern since it may increase nonresponse bias. The aim of this study is to estimate the contribution of a complementary survey among a subsample of nonrespondents, and the additional contribution of paradata in correcting for nonresponse bias in an occupational health surveillance survey. METHODS: In 2010, 10,000 workers were randomly selected and sent a postal questionnaire...
January 16, 2017: Revue D'épidémiologie et de Santé Publique
https://www.readbyqxmd.com/read/28103325/assessing-fifty-years-of-general-health-surveillance-of-roe-deer-in-switzerland-a-retrospective-analysis-of-necropsy-reports
#15
Mirjam Pewsner, Francesco Carlo Origgi, Joachim Frey, Marie-Pierre Ryser-Degiorgis
General wildlife health surveillance is a valuable source of information on the causes of mortality, disease susceptibility and pathology of the investigated hosts and it is considered to be an essential component of early warning systems. However, the representativeness of data from such surveillance programs is known to be limited by numerous biases. The roe deer (Capreolus capreolus capreolus) is the most abundant ungulate and a major game species all over Europe. Yet, internationally available literature on roe deer pathology is scarce...
2017: PloS One
https://www.readbyqxmd.com/read/28099688/discerning-the-survival-advantage-among-patients-with-prostate-cancer-who-undergo-radical-prostatectomy-or-radiotherapy-the-limitations-of-cancer-registry-data
#16
Stephen B Williams, Jinhai Huo, Karim Chamie, Marc C Smaldone, Christopher D Kosarek, Justin E Fang, Leslie M Ynalvez, Simon P Kim, Karen E Hoffman, Sharon H Giordano, Brian F Chapin
BACKGROUND: The objective of this study was to compare the overall survival of patients who undergo radical prostatectomy or radiotherapy versus noncancer controls to discern whether there is a survival advantage according to prostate cancer treatment and the impact of selection bias on these results. METHODS: A matched cohort study was performed using the Surveillance, Epidemiology, and End Results (SEER)-Medicare-linked database. In total, 34,473 patients ages 66 to 75 years were identified who were without significant comorbidity, were diagnosed with localized prostate cancer, and received treatment treated with surgery or radiotherapy between 2004 and 2011...
January 18, 2017: Cancer
https://www.readbyqxmd.com/read/28099518/evaluation-of-methods-for-the-concentration-and-extraction-of-viruses-from-sewage-in-the-context-of-metagenomic-sequencing
#17
Mathis Hjort Hjelmsø, Maria Hellmér, Xavier Fernandez-Cassi, Natàlia Timoneda, Oksana Lukjancenko, Michael Seidel, Dennis Elsässer, Frank M Aarestrup, Charlotta Löfström, Sílvia Bofill-Mas, Josep F Abril, Rosina Girones, Anna Charlotte Schultz
Viral sewage metagenomics is a novel field of study used for surveillance, epidemiological studies, and evaluation of waste water treatment efficiency. In raw sewage human waste is mixed with household, industrial and drainage water, and virus particles are, therefore, only found in low concentrations. This necessitates a step of sample concentration to allow for sensitive virus detection. Additionally, viruses harbor a large diversity of both surface and genome structures, which makes universal viral genomic extraction difficult...
2017: PloS One
https://www.readbyqxmd.com/read/28097361/folic-acid-supplementation-for-the-prevention-of-neural-tube-defects-an-updated-evidence-report-and-systematic-review-for-the-us-preventive-services-task-force
#18
REVIEW
Meera Viswanathan, Katherine A Treiman, Julia Kish-Doto, Jennifer C Middleton, Emmanuel J L Coker-Schwimmer, Wanda K Nicholson
Importance: Neural tube defects are among the most common congenital anomalies in the United States. Periconceptional folic acid supplementation is a primary care-relevant preventive intervention. Objective: To review the evidence on folic acid supplementation for preventing neural tube defects to inform the US Preventive Services Task Force for an updated Recommendation Statement. Data Sources: MEDLINE, Cochrane Library, EMBASE, and trial registries through January 28, 2016, with ongoing surveillance through November 11, 2016; references; experts...
10, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28095597/recollection-bias-and-its-underpinnings-lessons-from-terrorism-risk-assessments
#19
W Kip Viscusi, Richard J Zeckhauser
Recollection bias is the phenomenon whereby people who observe a highly unexpected event hold current risk beliefs about a similar event that are no higher than their recollection of their prior beliefs. This article replicates and extends the authors' previous study of recollection bias in relation to individuals' perceptions of the risks of terrorism attacks. Over 60% of respondents in a national U.S. sample of over 900 adults believe that the current risk of a future terrorist attack by either an airplane or in a public setting is no higher than they recall having believed, respectively, before the 9/11 attack and before the Boston Marathon bombing...
January 17, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28086776/comparison-of-two-adult-mosquito-sampling-methods-with-human-landing-catches-in-south-central-ethiopia
#20
Oljira Kenea, Meshesha Balkew, Habte Tekie, Teshome Gebre-Michael, Wakgari Deressa, Eskindir Loha, Bernt Lindtjørn, Hans J Overgaard
BACKGROUND: The human landing catch (HLC) is the standard reference method for measuring human exposure to mosquito bites. However, HLC is labour-intensive, exposes collectors to infectious mosquito bites and is subjected to collector bias. These necessitate local calibration and application of alternative methods. This study was undertaken to determine the relative sampling efficiency (RSE) of light traps with or without yeast-produced carbon dioxide bait vs. HLC in south-central Ethiopia...
January 13, 2017: Malaria Journal
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