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https://www.readbyqxmd.com/read/28445544/pressure-flaking-to-serrate-bifacial-points-for-the-hunt-during-the-mis5-at-sibudu-cave-south-africa
#1
Veerle Rots, Carol Lentfer, Viola C Schmid, Guillaume Porraz, Nicholas J Conard
Projectile technology is considered to appear early in the southern African Middle Stone Age (MSA) and the rich and high resolution MSA sequence of Sibudu Cave in KwaZulu-Natal has provided many new insights about the use and hafting of various projectile forms. We present the results of a functional and technological analysis on a series of unpublished serrated bifacial points recently recovered from the basal deposits of Sibudu Cave. These serrated tools, which only find equivalents in the neighbouring site of Umhlatuzana, precede the Still Bay techno-complex and are older than 77 ka BP...
2017: PloS One
https://www.readbyqxmd.com/read/28441452/systematic-review-finds-that-study-data-not-published-in-full-text-articles-have-unclear-impact-on-meta-analyses-results-in-medical-research
#2
Christine M Schmucker, Anette Blümle, Lisa K Schell, Guido Schwarzer, Patrick Oeller, Laura Cabrera, Erik von Elm, Matthias Briel, Joerg J Meerpohl
BACKGROUND: A meta-analysis as part of a systematic review aims to provide a thorough, comprehensive and unbiased statistical summary of data from the literature. However, relevant study results could be missing from a meta-analysis because of selective publication and inadequate dissemination. If missing outcome data differ systematically from published ones, a meta-analysis will be biased with an inaccurate assessment of the intervention effect. As part of the EU-funded OPEN project (www...
2017: PloS One
https://www.readbyqxmd.com/read/28438300/malignant-transformation-of-oral-lichen-planus-and-oral-lichenoid-lesions-a-meta-analysis-of-20095-patient-data
#3
REVIEW
Sana Maher Hasan Aghbari, Abdelrahman Ibrahim Abushouk, Attia Attia, Ahmed Elmaraezy, Amr Menshawy, Mohamed Shehata Ahmed, Basma Abdelaleem Elsaadany, Eman Magdy Ahmed
OBJECTIVES: For over a century, a heated debate existed over the possibility of malignant transformation of oral lichen planus (OLP). We performed this meta-analysis to evaluate the malignant potential of OLP and oral lichenoid lesions (OLL) and investigate the possible risk factors for OLP malignant transformation into oral squamous cell carcinoma (OSCC). MATERIALS AND METHODS: We searched Medline, Scopus, and Web of Knowledge for relevant observational studies...
May 2017: Oral Oncology
https://www.readbyqxmd.com/read/28436783/recognizing-the-patient-s-criticism-of-the-analyst
#4
Joan Sacks Lentz
Difficulty hearing criticism of us by our patients continues to be widespread among clinicians and interferes with progress in treatment. Analysts may have trouble hearing criticism because it is well hidden in the patient's associations or because it is difficult for them to recognize their shortcomings. The author suggests that the analyst's failure to hear criticism prevents the patient from resolving what may be the final, unhealthy ties to past objects. With a lens deliberately trained on criticism in our patients' material, analysts may be surprised by the myriad forms of criticism that are present and by the importance of receptive listening...
April 2017: Psychoanalytic Review
https://www.readbyqxmd.com/read/28436648/statistical-variable-selection-an-alternative-prioritization-strategy-during-the-non-target-analysis-of-lc-hr-ms-data
#5
Saer Samanipour, Malcolm J Reid, Kevin V Thomas
Liquid chromatography coupled to high resolution mass spectrometry (LC-HR-MS) has been one of the main analytical tools for the analysis of small polar organic pollutants in the environment. LC-HR-MS typically produces a large amount of data for a single chromatogram. The analyst is therefore required to perform prioritization prior to non-target structural elucidation. In the present study we have combined the F-ratio statistical variable selection and the apex detection algorithms in order to perform prioritization in data sets produced via LC-HR-MS...
April 24, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28434455/creating-a-pediatric-joint-council-to-promote-patient-safety-and-quality-governance-and-accountability-across-johns-hopkins-medicine
#6
Michael Rosen, Brigitta U Mueller, Aaron M Milstone, Denise R Remus, Renee Demski, Peter J Pronovost, Marlene R Miller
BACKGROUND: Large multihospital health systems with multiple children's hospitals are relatively few in number. With a paucity of national pediatric measures for quality and patient safety, there are unique challenges to ensuring consistent levels of care across diverse health care delivery settings. At Johns Hopkins Medicine, a Pediatric Joint Council was created to help ensure high-quality and safe care across a health system encompassing two full-service children's hospitals and two community hospitals with significant pediatric volumes across two states...
May 2017: Joint Commission Journal on Quality and Patient Safety
https://www.readbyqxmd.com/read/28430545/effects-of-motivation-rewarding-hackers-for-undetected-attacks-cause-analysts-to-perform-poorly
#7
Zahid Maqbool, Nidhi Makhijani, V S Chandrasekhar Pammi, Varun Dutt
OBJECTIVE: The aim of this study was to determine how monetary motivations influence decision making of humans performing as security analysts and hackers in a cybersecurity game. BACKGROUND: Cyberattacks are increasing at an alarming rate. As cyberattacks often cause damage to existing cyber infrastructures, it is important to understand how monetary rewards may influence decision making of hackers and analysts in the cyber world. Currently, only limited attention has been given to this area...
May 2017: Human Factors
https://www.readbyqxmd.com/read/28428734/defining-a-staged-based-process-for-economic-and-financial-evaluations-of-mhealth-programs
#8
Amnesty E LeFevre, Samuel D Shillcutt, Sean Broomhead, Alain B Labrique, Tom Jones
Mobile and wireless technology for health (mHealth) has the potential to improve health outcomes by addressing critical health systems constraints that impede coverage, utilization, and effectiveness of health services. To date, few mHealth programs have been implemented at scale and there remains a paucity of evidence on their effectiveness and value for money. This paper aims to improve understanding among mHealth program managers and key stakeholders of how to select methods for economic evaluation (comparative analysis for determining value for money) and financial evaluation (determination of the cost of implementing an intervention, estimation of costs for sustaining or expanding an intervention, and assessment of its affordability)...
2017: Cost Effectiveness and Resource Allocation: C/E
https://www.readbyqxmd.com/read/28428703/comparative-study-of-two-elisa-kits-for-estimation-of-antibodies-to-hepatitis-b-virus-in-human-normal-immunoglobulin-and-specific-immunoglobulin-intended-for-intravenous-or-intramuscular-use
#9
J P Prasad, Y Madhu, Arushi Mandhan, Payal Garg, Anu Prakash, Varsha Singh, Daud Ali, Prdeep Kumar, Surinder Singh, G R Soni, Varun Singh
Current study is conducted to evaluate method verification of two locally available kits manufactured by DSI & BIORAD for quantitative estimation of Hepatitis B virus antibodies in human normal immunoglobulin by using International standard of National Institute of Biological Standards and Control. Four analyst perform five sets of test in duplicate analysing accuracy, precision, and limit of detection, sensitivity and specificity. Our results suggest that both DSI and BIORAD kits fulfil the validation criteria and are sensitive to detect up to 10 mIU concentration precisely and accurately...
June 2017: Indian Journal of Clinical Biochemistry: IJCB
https://www.readbyqxmd.com/read/28424142/advance-care-planning-culture-and-religion-an-environmental-scan-of-australian-based-online-resources
#10
Amanda Pereira-Salgado, Patrick Mader, Leanne M Boyd
Objectives Culture and religion are important in advance care planning (ACP), yet it is not well understood how this is represented in ACP online resources. The aim of the present study was to identify the availability of Australian-based ACP websites and online informational booklets containing cultural and religious information.Methods An environmental scanning framework was used with a Google search conducted from 30 June 2015 to 5 July 2015. Eligible Australian-based ACP websites and online informational booklets were reviewed by two analysts (APS & PM) for information pertaining to at least one culture or religion...
April 20, 2017: Australian Health Review: a Publication of the Australian Hospital Association
https://www.readbyqxmd.com/read/28420324/evaluation-of-a-technology-enhanced-integrated-care-model-for-frail-older-persons-protocol-of-the-spec-study-a-stepped-wedge-cluster-randomized-trial-in-nursing-homes
#11
Hongsoo Kim, Yeon-Hwan Park, Young-Il Jung, Hyoungshim Choi, Seyune Lee, Gi-Soo Kim, Dong-Wook Yang, Myunghee Cho Paik, Tae-Jin Lee
BACKGROUND: Limited evidence exists on the effectiveness of the chronic care model for people with multimorbidity. This study aims to evaluate the effectiveness of an information and communication technology- (ICT-)enhanced integrated care model, called Systems for Person-centered Elder Care (SPEC), for frail older adults at nursing homes. METHODS/DESIGN: SPEC is a prospective stepped-wedge cluster randomized trial conducted at 10 nursing homes in South Korea. Residents aged 65 or older meeting the inclusion/exclusion criteria in all the homes are eligible to participate...
April 18, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/28418263/systematic-bias-in-predictions-of-new-drugs-budget-impact-analysis-of-a-sample-of-recent-us-drug-launches
#12
Michael S Broder, Jenelle M Zambrano, Jackie Lee, Richard S Marken
OBJECTIVE: Expectations about the budget impact of new drug launches may affect payer behavior and ultimately consumer costs. Therefore, we evaluated the accuracy of pre-launch US budget impact estimates for a sample of new drugs. METHODS: We searched for publicly available budget impact estimates made pre-launch for drugs approved in the US from 1(st) September 2010 to 1(st) September 2015 and compared them to actual sales. Accuracy was calculated as the ratio of pre-launch estimate to actual sales...
April 18, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28416644/evaluation-of-different-estimation-methods-for-accuracy-and-precision-in-biological-assay-validation
#13
Binbing Yu, Harry Yang
Biological assays (bioassays) are procedures to estimate the potency of a substance by studying its effects on living organisms, tissues, and cells. Bioassays are essential tools for gaining insight into biologic systems and processes including, for example, the development of new drugs and monitoring environmental pollutants. Two of the most important parameters of bioassay performance are relative accuracy (bias) and precision. Although general strategies and formulas are provided in USP 〈1033〉, a comprehensive understanding of the definitions of bias and precision remain elusive...
April 17, 2017: PDA Journal of Pharmaceutical Science and Technology
https://www.readbyqxmd.com/read/28409481/views-of-the-uk-general-public-on-important-aspects-of-health-not-captured-by-eq-5d
#14
Koonal Kirit Shah, Brendan Mulhern, Louise Longworth, M F Janssen
INTRODUCTION: The EQ-5D is a standardised instrument designed for use as a generic measure of health outcome. It was (and is) intended to provide information about a 'common core' of dimensions known to be relevant across a range of conditions; however, the five dimensions may not fully capture the health-related impacts of certain conditions. This study analyses the views of the UK general public about important aspects of health considered to be missing from the instrument. METHODS: Survey respondents were asked whether there are any aspects of health they consider to be important but are not captured by the EQ-5D, and, if so, what these aspects are...
April 13, 2017: Patient
https://www.readbyqxmd.com/read/28408854/control-of-confounding-in-the-analysis-phase-an-overview-for-clinicians
#15
Johnny Kahlert, Sigrid Bjerge Gribsholt, Henrik Gammelager, Olaf M Dekkers, George Luta
In observational studies, control of confounding can be done in the design and analysis phases. Using examples from large health care database studies, this article provides the clinicians with an overview of standard methods in the analysis phase, such as stratification, standardization, multivariable regression analysis and propensity score (PS) methods, together with the more advanced high-dimensional propensity score (HD-PS) method. We describe the progression from simple stratification confined to the inclusion of a few potential confounders to complex modeling procedures such as the HD-PS approach by which hundreds of potential confounders are extracted from large health care databases...
2017: Clinical Epidemiology
https://www.readbyqxmd.com/read/28408014/cost-effectiveness-thresholds-in-global-health-taking-a-multisectoral-perspective
#16
Michelle Remme, Melisa Martinez-Alvarez, Anna Vassall
Good health is a function of a range of biological, environmental, behavioral, and social factors. The consumption of quality health care services is therefore only a part of how good health is produced. Although few would argue with this, the economic framework used to allocate resources to optimize population health is applied in a way that constrains the analyst and the decision maker to health care services. This approach risks missing two critical issues: 1) multiple sectors contribute to health gain and 2) the goods and services produced by the health sector can have multiple benefits besides health...
April 2017: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/28405067/heterogeneity-of-systematic-reviews-in-oncology
#17
REVIEW
Jonathan Holmes, David Herrmann, Chelsea Koller, Sarah Khan, Blake Umberham, Jody A Worley, Matt Vassar
Systematic reviews synthesize data across multiple studies to answer a research question, and an important component of the review process is to evaluate the heterogeneity of primary studies considered for inclusion. Little is known, however, about the ways that systematic reviewers evaluate heterogeneity, especially in clinical specialties like oncology. We examined a sample of systematic reviews from this body of literature to determine how meta-analysts assessed and reported heterogeneity. A PubMed search of 6 oncology journals was conducted to locate systematic reviews and meta-analyses...
April 2017: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/28400950/economics-in-global-health-2035-a-sensitivity-analysis-of-the-value-of-a-life-year-estimates
#18
Angela Y Chang, Lisa A Robinson, James K Hammitt, Stephen C Resch
BACKGROUND: In "Global health 2035: a world converging within a generation," The Lancet Commission on Investing in Health (CIH) adds the value of increased life expectancy to the value of growth in gross domestic product (GDP) when assessing national well-being. To value changes in life expectancy, the CIH relies on several strong assumptions to bridge gaps in the empirical research. It finds that the value of a life year (VLY) averages 2.3 times GDP per capita for low- and middle-income countries (LMICs) assuming the changes in life expectancy they experienced from 2000 to 2011 are permanent...
June 2017: Journal of Global Health
https://www.readbyqxmd.com/read/28398525/a-longitudinal-analysis-of-data-quality-in-a-large-pediatric-data-research-network
#19
Ritu Khare, Levon Utidjian, Byron J Ruth, Michael G Kahn, Evanette Burrows, Keith Marsolo, Nandan Patibandla, Hanieh Razzaghi, Ryan Colvin, Daksha Ranade, Melody Kitzmiller, Daniel Eckrich, L Charles Bailey
Objective: PEDSnet is a clinical data research network (CDRN) that aggregates electronic health record data from multiple children's hospitals to enable large-scale research. Assessing data quality to ensure suitability for conducting research is a key requirement in PEDSnet. This study presents a range of data quality issues identified over a period of 18 months and interprets them to evaluate the research capacity of PEDSnet. Materials and Methods: Results were generated by a semiautomated data quality assessment workflow...
April 8, 2017: Journal of the American Medical Informatics Association: JAMIA
https://www.readbyqxmd.com/read/28397085/simulation-extrapolation-with-latent-heteroskedastic-error-variance
#20
J R Lockwood, Daniel F McCaffrey
This article considers the application of the simulation-extrapolation (SIMEX) method for measurement error correction when the error variance is a function of the latent variable being measured. Heteroskedasticity of this form arises in educational and psychological applications with ability estimates from item response theory models. We conclude that there is no simple solution for applying SIMEX that generally will yield consistent estimators in this setting. However, we demonstrate that several approximate SIMEX methods can provide useful estimators, leading to recommendations for analysts dealing with this form of error in settings where SIMEX may be the most practical option...
March 29, 2017: Psychometrika
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