Assessing the reporting quality in abstracts of randomized controlled trials in leading journals of oral implantology.

AIM Abstracts of randomized clinical trials are extremely important as trial appraisal is often based on the information included here. The objective of this study was to assess the quality of the reporting of RCT abstracts in journals of Oral Implantology. MATERIAL AND METHODS Six leading Implantology journals were screened for RCTs between years 2008 and 2012. A 21-item modified CONSORT for abstracts checklist was used to examine the completeness of abstract reporting. Descriptive statistics and linear regression modeling were employed for data analysis. RESULTS One hundred and sixty three RCT abstracts were included in this study. The majority of the RCTs were published in the Clinical Oral Implants Research (42.9%). The mean overall reporting quality score was 58.6% (95% CI: 57.6-59.7). The highest score was noted in the European Journal of Oral Implantology (63.8%; 95% CI: 61.8-65.8). Multivariate analysis demonstrated that abstract quality score was related to publication journal and number of research centers involved. Most abstracts adequately reported interventions (89.0%), objectives (77.9%) and conclusions (74.8%) while failed to report randomization procedures, allocation concealment, effect estimate, confidence intervals, and funding. Registration of RCTs was not reported in any of the abstracts. CONCLUSIONS The reporting quality in abstracts of RCTs published in Oral Implantology journals needs to be improved. Editors and authors should be encouraged to endorse the CONSORT for abstracts guidelines in order to achieve optimal quality in abstract reporting.

Are sample sizes clear and justified in RCTs published in dental journals?

Sample size calculations are advocated by the CONSORT group to justify sample sizes in randomized controlled trials (RCTs). The aim of this study was primarily to evaluate the reporting of sample size calculations, to establish the accuracy of these calculations in dental RCTs and to explore potential predictors associated with adequate reporting. Electronic searching was undertaken in eight leading specific and general dental journals. Replication of sample size calculations was undertaken where possible. Assumed variances or odds for control and intervention groups were also compared against those observed. The relationship between parameters including journal type, number of authors, trial design, involvement of methodologist, single-/multi-center study and region and year of publication, and the accuracy of sample size reporting was assessed using univariable and multivariable logistic regression. Of 413 RCTs identified, sufficient information to allow replication of sample size calculations was provided in only 121 studies (29.3%). Recalculations demonstrated an overall median overestimation of sample size of 15.2% after provisions for losses to follow-up. There was evidence that journal, methodologist involvement (OR���=���1.97, CI: 1.10, 3.53), multi-center settings (OR���=���1.86, CI: 1.01, 3.43) and time since publication (OR���=���1.24, CI: 1.12, 1.38) were significant predictors of adequate description of sample size assumptions. Among journals JCP had the highest odds of adequately reporting sufficient data to permit sample size recalculation, followed by AJODO and JDR, with 61% (OR���=���0.39, CI: 0.19, 0.80) and 66% (OR���=���0.34, CI: 0.15, 0.75) lower odds, respectively. Both assumed variances and odds were found to underestimate the observed values. Presentation of sample size calculations in the dental literature is suboptimal; incorrect assumptions may have a bearing on the power of RCTs.

Exploring the publications in three major orthodontic journals: a comparative analysis of two 5-year periods.

OBJECTIVE To analyze the types of articles and authorship characteristics of three orthodontic journals--American Journal of Orthodontics and Dentofacial Orthopedics (AJODO), The Angle Orthodontist (AO), and European Journal of Orthodontics (EJO)--published between 2008 and 2012 and to assess the differences in content within this period and an earlier period of 1998 to 2002. MATERIALS AND METHODS Each journal's content was accessed through the web edition. From each article, the following parameters were recorded: article type, number of authors, number of affiliations, source of article (referring to the first author's affiliation), and geographic origin. Descriptive statistics were performed and selected parameters were analyzed with the Pearson chi-square or Fisher exact test for independence at the .05 level of significance. RESULTS Review of differences between the two periods showed that the number of publications was almost double. The percentages of multi-authored articles increased. Fewer studies derived from the United States/Canada and European Union countries. Increases for articles from non-European Union countries, Asia, and other countries were found. Characteristics of the second period showed that the EJO and AO published more research articles, whereas the AJODO regularly published case reports and other articles. Approximately 75% of all studies derived from orthodontic departments. CONCLUSIONS The publications from 1998-2002 and 2008-2012 were significantly different both in terms of numbers and characteristics. Within 2008-2012 there were notable differences between the three journals concerning the type and origin of the publications.

Die j��dischen Kolonien in Russland : kulturhistorische Studie und Beitrag zur Geschichte der Juden in Russland ; nach den Berichten des russisch-israelitischen Journals "Woschod" und nach eigenen in den russisch-j��dischen Kolonien selbst gemachten Beobachtungen bearbeitet

Julius Elk

Sir Moses Montefiore : a centennial biography with extracts from letters and journals

by Lucien Wolf

An Assessment of the Risk of Bias in Randomized Controlled Trial Reports Published in Prosthodontic and Implant Dentistry Journals

PURPOSE The objective of this study was to assess the risk of bias of randomized controlled trials (RCTs) published in prosthodontic and implant dentistry journals. MATERIALS AND METHODS The last 30 issues of 9 journals in the field of prosthodontic and implant dentistry (Clinical Implant Dentistry and Related Research, Clinical Oral Implants Research, Implant Dentistry, International Journal of Oral & Maxillofacial Implants, International Journal of Periodontics and Restorative Dentistry, International Journal of Prosthodontics, Journal of Dentistry, Journal of Oral Rehabilitation, and Journal of Prosthetic Dentistry) were hand-searched for RCTs. Risk of bias was assessed using the Cochrane Collaboration's risk of bias tool and analyzed descriptively. RESULTS From the 3,667 articles screened, a total of 147 RCTs were identified and included. The number of published RCTs increased with time. The overall distribution of a high risk of bias assessment varied across the domains of the Cochrane risk of bias tool: 8% for random sequence generation, 18% for allocation concealment, 41% for masking, 47% for blinding of outcome assessment, 7% for incomplete outcome data, 12% for selective reporting, and 41% for other biases. CONCLUSION The distribution of high risk of bias for RCTs published in the selected prosthodontic and implant dentistry journals varied among journals and ranged from 8% to 47%, which can be considered as substantial.

Reporting quality of randomised controlled trials published in prosthodontic and implantology journals

The purpose of this study was to examine the reporting quality of randomised controlled trials (RCTs) published in prosthodontic and implantology journals. Thirty issues of nine journals in prosthodontics and implant dentistry were searched for RCTs, covering the years 2005-2012: The Journal of Prosthetic Dentistry, Journal of Oral Rehabilitation, The International Journal of Prosthodontics, The International Journal of Periodontics & Restorative Dentistry, Clinical Oral Implants Research, Clinical Implant Dentistry & Related Research, The International Journal of Oral & Maxillofacial Implants, Implant Dentistry and Journal of Dentistry. The reporting quality was assessed using a modified Consolidated Standards of Reporting Trials (CONSORT) statement checklist. Data were analysed using descriptive statistics followed by univariable and multivariable examination of statistical associations (����=��0��05). A total of 147 RCTs were identified with a mean CONSORT score of 69��4 (s.d.��=��9��7). Significant differences were found among journals with the Journal of Oral Rehabilitation achieving the highest score (80��6, s.d.��=��5��5) followed by Clinical Oral Implants Research (73��7, s.d.��=��8��3). Involvement of a statistician/methodologist was significantly associated with increased CONSORT scores. Overall, the reporting quality of RCTs in major prosthodontic and implantology journals requires improvement. This is of paramount importance considering that optimal reporting of RCTs is an important prerequisite for clinical decision-making.

Outcome discrepancies and selective reporting: impacting the leading journals?

BACKGROUND Selective outcome reporting of either interesting or positive research findings is problematic, running the risk of poorly-informed treatment decisions. We aimed to assess the extent of outcome and other discrepancies and possible selective reporting between registry entries and published reports among leading medical journals. METHODS Randomized controlled trials published over a 6-month period from July to December 31st, 2013, were identified in five high impact medical journals: The Lancet, British Medical Journal, New England Journal of Medicine, Annals of Internal Medicine and Journal of American Medical Association were obtained. Discrepancies between published studies and registry entries were identified and related to factors including registration timing, source of funding and presence of statistically significant results. RESULTS Over the 6-month period, 137 RCTs were found. Of these, 18% (n = 25) had discrepancies related to primary outcomes with the primary outcome changed in 15% (n = 20). Moreover, differences relating to non-primary outcomes were found in 64% (n = 87) with both omission of pre-specified non-primary outcomes (39%) and introduction of new non-primary outcomes (44%) common. No relationship between primary or non-primary outcome change and registration timing (prospective or retrospective; P = 0.11), source of funding (P = 0.92) and presence of statistically significant results (P = 0.92) was found. CONCLUSIONS Discrepancies between registry entries and published articles for primary and non-primary outcomes were common among trials published in leading medical journals. Novel approaches are required to address this problem.

Travels and researches among the lakes and mountains of Eastern & Central Africa : from the journals of the late James Frederick Elton

from the journals of the late J. Frederick Elton, F.R.G.S., H.B.M. Consul at Mozambique ; edited and compiled by H.B. Cotterill

El mito revisitado en The World doesn't end, de Charles Simic

Este art��culo realiza un acercamiento al libro de poemas en prosa The World Doesn���t End, del poeta serbio-norteamericano Charles Simic. En el poemario se advierten dos rasgos fundamentales que contribuyen a configurar la visi��n del mundo que Simic desarrolla a lo largo de su extensa producci��n: por un lado, la creaci��n de un universo de ribetes surrealistas y, por otro, una nostalgia por el pasado como tiempo perdido, recuperable solamente a trav��s de la imaginaci��n. The World Doesn���t End, publicado en Estados Unidos en 1990, fue traducido al espa��ol por Mario Lucarda en Espa��a, y ha llegado nuestro pa��s solamente mediante versiones de algunos de los poemas en prosa en publicaciones peri��dicas. Es por eso que se propone, al final del art��culo, una breve selecci��n de textos traducidos al espa��ol, para contribuir a la difusi��n de este autor que manifiesta, con su obra, una de las m��ltiples voces de la poes��a norteamericana contempor��nea.

Implementation and development in OJS of the Scientific Journals Site of the Facultad de Humanidades y Ciencias de la Educaci��n of the Universidad Nacional de La Plata

Nuestro objetivo es compartir la experiencia de implementaci��n y desarrollo en OJS del Portal de Revistas Cient��ficas de la Facultad de Humanidades y Ciencias de la Educaci��n (FaHCE) de la Universidad Nacional de La Plata (UNLP) a trav��s del cual se publican en acceso abierto, bajo licencias Creative Commons, las revistas cient��ficas de esta Unidad Acad��mica, incluyendo tanto las electr��nicas como las versiones digitales de las de formato papel. El proyecto Portal de Revistas, inaugurado en diciembre de 2012, a cargo del Area de Publicaciones, logr�� unificar el acceso a las revistas de la instituci��n que integran el N��cleo B��sico de Revistas Cient��ficas Argentinas (CAICYT-CONICET). Su objetivo es facilitar la gesti��n editorial, el cumplimiento de la periodicidad y de los par��metros de evaluaci��n sugeridos por las bases de datos regionales e internacionales y la automatizaci��n de los env��os a bases de datos para aumentar su visibilidad optimizando los tiempos de trabajo

La cooperaci��n entre editores y bibliotecarios como estrategia institucional para la gesti��n de revistas cient��ficas

El desarrollo sostenido de edici��n de revistas cient��ficas ha abierto un campo de an��lisis y aplicaci��n de conocimientos espec��ficos para los bibliotecarios. El trabajo en cooperaci��n con los editores enriquece a ambos actores pues, mientras los bibliotecarios conocen los est��ndares de normalizaci��n de la informaci��n y difusi��n del conocimiento cient��fico, los editores se centran en las tareas acad��micas -pertinencia tem��tica, relaci��n con autores y evaluadores, revisi��n por pares. Los indicadores de evaluaci��n de revistas cient��ficas, tanto regionales como internacionales, se han afianzado en las ��ltimas d��cadas a partir de acuerdos interinstitucionales y de la aceptaci��n de los propios editores, aplic��ndose criterios de gesti��n y criterios formales de edici��n y evaluaci��n. En este contexto, los editores necesitan un apoyo especializado que los acompa��e en el proceso de desarrollo cient��fico y t��cnico para conseguir que sus revistas se inserten en los principales n��cleos de publicaciones cient��ficas de cada disciplina. En este trabajo se presenta la experiencia de la Coordinaci��n del ��rea de Publicaciones, en la Biblioteca de la Facultad de Humanidades y Ciencias de la Educaci��n de la Universidad Nacional de La Plata, que edita actualmente m��s de 20 revistas

Magazines y peri��dicos: zonas de superposici��n en la lucha por el mercado (1898-1904)

Fil: Rogers, Geraldine. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educaci��n; Argentina.