Recruitment through media and general practitioners resulted in comparable samples in an RCT on incontinence.
To assess the impact of recruitment strategy on the baseline characteristics of patients recruited in a randomized controlled trial for treating women with urinary incontinence. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - December 4, 2019 Category: Epidemiology Authors: Henk van der Worp, Anne M.M. Loohuis, Ilse L. Flohil, Boudewijn J. Kollen, Nienke J. Wessels, Marco H. Blanker Tags: Original Article Source Type: research

Consideration of confounding was suboptimal in the reporting of observational studies in psychiatry: a meta-epidemiological study
When reporting observational studies, authors should explicitly discuss the potential for confounding and other biases but it is unclear to what extent this is done within the psychiatric field. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - December 3, 2019 Category: Epidemiology Authors: Klaus Munkholm, Maria Faurholt-Jepsen, John P.A. Ioannidis, Lars G. Hemkens Tags: Original Article Source Type: research

Systematic review finds that appraisal tools for medical research studies address conflicts of interest superficially
To identify and summarise 1) appraisal tools and other guides which address conflicts of interest in medical research studies; and 2) top journals with policies on managing conflicts of interest in journal papers. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - December 3, 2019 Category: Epidemiology Authors: Andreas Lundh, Kristine Rasmussen, Lasse Østengaard, Isabelle Boutron, Lesley A. Stewart, Asbjørn Hróbjartsson Tags: Review Source Type: research

An observational study found large methodological heterogeneity in systematic reviews addressing prevalence and cumulative incidence
To assess reporting and methodological aspects of systematic reviews (SRs) on prevalence and cumulative incidence data. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - December 3, 2019 Category: Epidemiology Authors: Falk Hoffmann, Daniela Eggers, Dawid Pieper, Hajo Zeeb, Katharina Allers Tags: Original Article Source Type: research

Cover 2 Editorial Board
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 30, 2019 Category: Epidemiology Source Type: research

Table of Contents
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 30, 2019 Category: Epidemiology Source Type: research

Should the cost perspective be integrated in clinical guidelines?
In the evaluation of healthcare interventions, as input for developing and updating clinical guidelines, the choice of outcome measures is key. Of course, subjective and objective health outcome, daily functioning, and health-related quality of life will have central positions. Over the years, it has become clear that in operationalizing these outcomes, the patient perspective is the most important guide for clinicians to optimize individual care. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 30, 2019 Category: Epidemiology Authors: J. Andr é Knottnerus, Peter Tugwell Tags: Editorial Source Type: research

Reviewers of the year
High quality of published research cannot be achieved without high quality peer review of submitted manuscripts. Good reviews are critical, but also provide authors with constructive comments to make their manuscripts even better. As an editorial team, we are extremely grateful to all our colleagues who have volunteered their expertise and have taken time out of their busy schedules to participate in the peer review for our journal. They helped us to make good editorial decisions and to safeguard the quality of the papers that were published in the past year. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 30, 2019 Category: Epidemiology Source Type: research

David Sackett Young Investigator Award
In 2015, the Journal of Clinical of Epidemiology has initiated the annual David Sackett Young Investigator Award. This award is in the spirit of the late David L. Sackett, who over many decades and in numerous ways has continuously  inspired and educated generations of young investigators in the fields of clinical epidemiology and evidence-based medicine. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 30, 2019 Category: Epidemiology Tags: David Sackett Young Investigator Award Source Type: research

Patient focused outcomes are infrequently reported in paediatric health information technology trials: A systematic review
Billions of dollars have been invested in Health Information Technologies (HITs), and Randomised Controlled Trials (RCTs) have been conducted to identify the effects of these interventions. Our objective was to identify the types of outcomes that were measured and reported in these RCTs. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 30, 2019 Category: Epidemiology Authors: Matthew T. Neame, Jerry Chacko, Jamie J. Kirkham, Ian P. Sinha, Daniel B. Hawcutt Tags: Review Source Type: research

Discontinuing long-term medication in primary care: how well do trials report the intervention?
Discontinuation of inappropriate medication is widely recognised as an essential component of best prescribing practice. Physicians typically attempt to taper or stop medications on the basis of clinical experience, rather than using a systematic approach guided by evidence. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 29, 2019 Category: Epidemiology Authors: Thomas Dirven, Cynthia Turner, Sioe-Lie Thio, Jeanet Blom, Christiane Muth, Mieke L. van Driel Tags: Original Article Source Type: research

Reporting of key methodological issues in placebo-controlled trials of surgery needs improvement: a systematic review
To examine key methodological considerations for using a placebo intervention in randomised controlled trials (RCTs) evaluating invasive procedures, including surgery. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 28, 2019 Category: Epidemiology Authors: Cousins S, Blencowe NB, Tsang C, Lorenc A, Chalmers K, Carr AJ, Campbell MK, Cook JA, Beard DJ, Blazeby JM Tags: Review Source Type: research

Discrepancies in meta-analyses answering the same clinical question were hard to explain: a meta-epidemiological study
To systematically explore the methodological factors underpinning discrepancies in pooled effect estimates from Cochrane (CR) and non-Cochrane (NCR) systematic reviews answering the same clinical question. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 26, 2019 Category: Epidemiology Authors: Claudia Hacke, David Nunan Tags: Original Article Source Type: research

An observational study of missing data enquiry from randomised trial authors showed a poor response
The quality of evidence from a meta-analysis might be affected by poor or inadequate reporting of individual randomized controlled trials (RCTs). The results of data request from authors has not been investigated to date. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 25, 2019 Category: Epidemiology Authors: Sofia Tsokani, Dimitrios Mavridis, Shahab Hadjibandeh, Shahin Hadjibandeh, George A. Antoniou, Alexandros Andreou, Stavros A. Antoniou Tags: Original Article Source Type: research

Methodological and reporting quality in non-Cochrane systematic review updates could be improved: a comparative study
To compare the methodological and reporting quality of updated systematic reviews (SRs) and original SRs. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 20, 2019 Category: Epidemiology Authors: Ya Gao, Yitong Cai, Kelu Yang, Ming Liu, Shuzhen Shi, Ji Chen, Yue Sun, Fujian Song, Junhua Zhang, Jinhui Tian Tags: Review Source Type: research

P value –driven methods were underpowered to detect publication bias: analysis of Cochrane review meta-analyses
The aim of the study was to investigate the effect of number of studies in a meta-analysis on the detection of publication bias using P value –driven methods. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 16, 2019 Category: Epidemiology Authors: Luis Furuya-Kanamori, Chang Xu, Lifeng Lin, Tinh Doan, Haitao Chu, Lukman Thalib, Suhail A.R. Doi Tags: Original Article Source Type: research

P-value driven methods were underpowered to detect publication bias: analysis of Cochrane review meta-analyses
To investigate the effect of number of studies in a meta-analysis on the detection of publication bias using p-value driven methods. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 16, 2019 Category: Epidemiology Authors: Luis Furuya-Kanamori, Chang Xu, Lifeng Lin, Tinh Doan, Haitao Chu, Lukman Thalib, Suhail A.R. Doi Tags: Original Article Source Type: research

Frequent inappropriate use of unweighted summary statistics in systematic reviews of pathogen genotypes or genogroups
Our study aims to systematically assess and report the methodological quality used in epidemiological systematic reviews (SRs) and meta-analysis (MA) of pathogen genotypes/genogroups. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 15, 2019 Category: Epidemiology Authors: Linh Tran, Mai Nhu Y, Thai Le Ba Nghia, Abdulrahman Hendam, Nguyen Lam Vuong, Ebrahim Alzalal, Ahmed M. Sayed, Mustafa Mushtaq Hussain, Akash Sharma, Thuan Tieu, Peterson Gitonga Mathenge, Kenji Hirayama, Neal Alexander, Nguyen Tien Huy Tags: Review Source Type: research

Mapping of reporting guidance for systematic reviews and meta-analyses generated a comprehensive item bank for future reporting guidelines
To generate a comprehensive bank of systematic review (SR) reporting items to inform an update of the PRISMA 2009 statement. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 15, 2019 Category: Epidemiology Authors: Matthew J. Page, Joanne E. McKenzie, Patrick M. Bossuyt, Isabelle Boutron, Tammy Hoffmann, Cynthia D. Mulrow, Larissa Shamseer, David Moher Tags: Original Article Source Type: research

Overall bias methods and their use in sensitivity analysis of Cochrane reviews were not consistent
To analyze methods of assessing ‘overall bias’ in Cochrane reviews of interventions published in the Cochrane Database of Systematic Reviews (CDSR), and sensitivity analyses related to overall risk of bias (RoB). (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 14, 2019 Category: Epidemiology Authors: Andrija Babic, Ivana Vuka, Frano Saric, Ivona Proloscic, Ema Slapnicar, Jakica Cavar, Tina Poklepovic Pericic, Dawid Pieper, Livia Puljak Tags: Original Article Source Type: research

Data mining information from electronic health records produced high yield and accuracy for current smoking status
Researchers are increasingly using routine clinical data for care evaluations and feedback to patients and clinicians. The quality of these evaluations depends on the quality and completeness of the input data. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 12, 2019 Category: Epidemiology Authors: T. Katrien J. Groenhof, Laurien R. Koers, Enja Blasse, Mark de Groot, Diederick E. Grobbee, Michiel L. Bots, Folkert W. Asselbergs, A. Titia Lely, Saskia Haitjema, the UPOD, UCC-CVRM Study Groups Tags: Original Article Source Type: research

Data mining information from EHRs produced high yield and accuracy for current smoking status
Researchers are increasingly using routine clinical data for care evaluations and feedback to patients and clinicians. The quality of these evaluations depends on the quality and completeness of the input data. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 12, 2019 Category: Epidemiology Authors: T. Katrien J. Groenhof, Laurien R. Koers, Enja Blasse, Mark de Groot, Diederick E. Grobbee, Michiel L. Bots, Folkert W. Asselbergs, A. Titia Lely, Saskia Haitjema, the UPOD & UCC-SMART study groups Tags: Original Article Source Type: research

Reporting of interventions used in anesthesiology trials: analysis using the Template for Intervention Description and Replication (TIDieR) checklist
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 11, 2019 Category: Epidemiology Authors: Samuel Jellison, Johnny Nolan, Nam Vo, Mark Thai, Livia Puljak, Matt Vassar Tags: Letter to the editor Source Type: research

The reporting of race and/or ethnicity in the medical literature: a retrospective bibliometric analysis confirmed room for improvement
Although the collection of race and/or ethnicity data is an important way to identify and address inequalities in health care provision and disparities in access to treatment, studies examining the extent to which race and/or ethnicity data are reported in the medical literature, and the quality of this data, are lacking . Therefore, we sought to objectively determine the quality of reporting of race and/or ethnicity in original medical research papers. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 9, 2019 Category: Epidemiology Authors: Therezia Bokor-Billmann, Ewan A. Langan, Franck Billmann Tags: Original Article Source Type: research

GRADE guidelines 26: Informative statements to communicate the findings of systematic reviews of interventions
Clear communication of systematic review findings will help readers and decision makers. We built on previous work to develop an approach that improves the clarity of statements to convey findings and that draws on Grading of Recommendations Assessment, Development and Evaluation (GRADE). (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 8, 2019 Category: Epidemiology Authors: Nancy Santesso, Claire Glenton, Philipp Dahm, Paul Garner, Elie Akl, Brian Alper, Romina Brignardello-Petersen, Alonso Carrasco-Labra, Hans De Beer, Monica Hultcrantz, Ton Kuijpers, Joerg Meerpohl, Rebecca Morgan, Reem Mustafa, Nicole Skoetz, Shahnaz Sult Tags: Original Article Source Type: research

GRADE guidelines 27: How to calculate absolute effects for time-to-event outcomes in Summary of Findings tables and Evidence Profiles
To provide GRADE guidance on how to prepare Summary of Findings tables and Evidence Profiles for time-to-event outcomes with a focus on the calculation of the corresponding absolute effect estimates. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 8, 2019 Category: Epidemiology Authors: Nicole Skoetz, Marius Goldkuhle, Elvira C. van Dalen, Elie A. Akl, Marialena Trivela, Reem A. Mustafa, Artur Nowak, Philipp Dahm, Holger Sch ünemann, Ralf Bender, GRADE Working Group Tags: Original Article Source Type: research

The Fragility Index of Practice Changing Clinical Trials is Low and Highly Correlated with P-Values
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 8, 2019 Category: Epidemiology Authors: Joshua D. Niforatos, Alexander R. Zheutlin, Alexander Chaitoff, Richard M. Pescatore Tags: Letter to the editor Source Type: research

Changing predictor measurement procedures affected the performance of prediction models in clinical examples
To quantify the impact of predictor measurement heterogeneity on prediction model performance. Predictor measurement heterogeneity refers to variation in the measurement of predictor(s) between the derivation of a prediction model and its validation or application. It arises, for instance, when predictors are measured using different measurement instruments or protocols. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 8, 2019 Category: Epidemiology Authors: K. Luijken, L. Wynants, M. van Smeden, B. Van Calster, E.W. Steyerberg, R.H.H. Groenwold, Collaborators, D. Timmerman, T. Bourne, C. Ukaegbu Tags: Original Article Source Type: research

Enrolment-latency in randomized behavior change trials: individual participant data meta-analysis showed association with attrition but not effect-size
Nonresponse can bias prevalence estimates in population surveys. Effects of selective participation in behavior change intervention trials have been little studied. We tested hypotheses that trial participants who are hard to recruit are (1) more likely to be lost-to-follow-up and (2) less responsive to intervention. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 7, 2019 Category: Epidemiology Authors: Kypros Kypri, Steven J. Bowe, Nadine Karlsson, Jim McCambridge Tags: Original Article Source Type: research

Improving measurement models in clinical epidemiology: time to move  beyond the inherent assumption of an underlying reflective measurement model
The nature of a construct's measurement model, most decisively being predominantly reflective or formative, is essential for its development, validation, and use. Differentiating between these types of measurement models cannot be done based on statistics alone, but has to rely on expert judgment, preferably guided by checklists and theoretical assumptions. However, consideration and substantiation of the choices of the measurement models is lacking in most studies describing the validation of measurement instruments in the field of clinical epidemiology. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 7, 2019 Category: Epidemiology Authors: Ludovic G.P.M van Amelsvoort, Bram P.I. Fleuren, IJmert Kant Tags: Commentary Source Type: research

Enrolment-latency in randomised behaviour change trials: IPD meta-analysis showed association with attrition but not effect-size
Non-response can bias prevalence estimates in population surveys. Effects of selective participation in behaviour change intervention trials have been little studied. We tested hypotheses that trial participants who are hard to recruit are (1) more likely to be lost-to-follow-up and (2) less responsive to intervention. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 7, 2019 Category: Epidemiology Authors: Kypros Kypri, Steven J. Bowe, Nadine Karlsson, Jim McCambridge Tags: Original Article Source Type: research

Improving measurement models in clinical epidemiology. Time to move beyond the inherent assumption of an underlying reflective measurement model
The nature of a construct ’s measurement model, most decisively being predominantly reflective or formative, is essential for its development, validation and use. Differentiating between these types of measurement models cannot be done based on statistics alone, but has to rely on expert judgement, preferably guided by che cklists and theoretical assumptions. However, consideration and substantiation of the choices of the measurement models is lacking in most studies describing the validation of measurement instruments in the field of clinical epidemiology. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 7, 2019 Category: Epidemiology Authors: Ludo van Amelsvoort, Bram Fleuren, IJmert Kant Tags: Commentary Source Type: research

Qualitative approaches can strengthen generalization and application of clinical research
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 7, 2019 Category: Epidemiology Authors: Bart J. Knottnerus, Lucinda S. Bertels, Dick L. Willems Tags: Commentary Source Type: research

Non-randomized studies using causal-modelling may give different answers than RCTs: a meta-epidemiological study
To evaluate how estimated treatment effects agree between non-randomized studies using causal modelling with marginal structural models (MSM-studies) and randomized trials (RCTs). (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 6, 2019 Category: Epidemiology Authors: Hannah Ewald, John PA. Ioannidis, Aviv Ladanie, Kimberly Mc Cord, Heiner C. Bucher, Lars G. Hemkens Tags: Original Article Source Type: research

Nonrandomized studies using causal-modeling may give different answers than RCTs: a meta-epidemiological study
To evaluate how estimated treatment effects agree between nonrandomized studies using causal modeling with marginal structural models (MSM-studies) and randomized trials (RCTs). (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 5, 2019 Category: Epidemiology Authors: Hannah Ewald, John P.A. Ioannidis, Aviv Ladanie, Kimberly Mc Cord, Heiner C. Bucher, Lars G. Hemkens Tags: Review Source Type: research

Meta-analyses frequently pooled different study types together: a meta-epidemiological study
To evaluate therapeutic meta-analyses including both observational studies and randomized controlled trials (RCTs), how these studies were combined and whether there were differences in treatment effects. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 4, 2019 Category: Epidemiology Authors: Ren é-Sosata Bun, Jordan Scheer, Sylvie Guillo, Florence Tubach, Agnès Dechartres Tags: Original Article Source Type: research

Excluding non-English publications from evidence-syntheses did not change conclusions: a meta-epidemiological study
We aimed to assess whether limiting the inclusion criteria solely to English-language publications affected the overall conclusions of evidence syntheses. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 4, 2019 Category: Epidemiology Authors: B. Nussbaumer-Streit, I. Klerings, A.I. Dobrescu, E. Persad, A. Stevens, C. Garritty, C. Kamel, L. Affengruber, V.J. King, G. Gartlehner Tags: Original Article Source Type: research

Psychometric measurements of amstar 2 in a sample of meta-analyses indexed in psycinfo
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 4, 2019 Category: Epidemiology Authors: Leclercq V, Beaudart C, Tirelli E, Bruy ère O Tags: Letter to the editor Source Type: research

Simulations and directed acyclic graphs explained why assortative mating biases the prenatal negative control design
The negative control design can be used to provide evidence for whether a prenatal exposure-outcome association occurs by in-utero mechanisms. Assortative mating has been suggested to influence results from negative control designs, though how and why has not yet been adequately explained. We aimed to explain why mutual adjustment of maternal and paternal exposure in regression models can account for assortative mating. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 2, 2019 Category: Epidemiology Authors: Paul Madley-Dowd, Dheeraj Rai, Stanley Zammit, Jon Heron Tags: Original Article Source Type: research

Can university medical center trial investigators do more to ensure timely publication of clinical trial results?
The all –trials initative [http://www.alltrials.net/find-out-more/why-this-matters/the-alltrials-campaign/] calls on governments, regulators and research bodies to register all trials past and present and report the full methods and the results within 12 months on the completion of the trial. Without thi s information, the results of these trials could be lost forever to doctors and researchers, leading to missed opportunities for good medicine, and trials being repeated. The initiative also calls for all universities, ethics committees and medical bodies to enact a change of culture, recognise that underreporti...
Source: Journal of Clinical Epidemiology - November 1, 2019 Category: Epidemiology Tags: Editorial Source Type: research

Cover 2 Editorial Board
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 1, 2019 Category: Epidemiology Source Type: research

Table of Contents
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - November 1, 2019 Category: Epidemiology Source Type: research

Quality of therapeutic drug monitoring (TDM) guidelines is suboptimal: an evaluation using the AGREE II instrument
This study was aimed to assess the quality of current TDM guidelines using the Appraisal of Guidelines for Research and Evaluation (AGREE) II instrument. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - October 31, 2019 Category: Epidemiology Authors: Min Zeng, Qiusha Yi, Linan Zeng, Zhe Chen, Xue Mi, Haoxin Song, Xianglin Zhang, Youping Li, Qiang Wang, Rongsheng Zhao, Liyan Miao, Lingli Zhang Tags: Original Article Source Type: research

AMSTAR 2 overall confidence rating: Lacking discriminating capacity or requirement of high methodological quality?
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - October 31, 2019 Category: Epidemiology Authors: Robert C. Lorenz, Katja Matthias, Dawid Pieper, Uta Wegewitz, Johannes Morche, Marc Nocon, Olesja Rissling, Jacqueline Schirm, Simone Freitag, Anja Jacobs Tags: Letter to the editor Source Type: research

Drug –drug interaction trials incompletely described drug interventions in ClinicalTrials.gov and published articles: an observational study
The aim of the study was to evaluate the completeness of intervention description in ClinicalTrials.gov and corresponding journal articles for registered and published drug –drug interaction (DDI) trials because complete and transparent description of interventions is particularly important for DDI. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - October 22, 2019 Category: Epidemiology Authors: Diana Juri ć, Adriana Bolić, Shelly Pranić, Ana Marušić Tags: Original Article Source Type: research

Drug-drug interaction trials incompletely described drug interventions in ClinicalTrials.gov and published articles: an observational study
To evaluate the completeness of intervention description in ClinicalTrials.gov and corresponding journal articles for registered and published drug-drug interaction (DDI) trials, because complete and transparent description of interventions is particularly important for DDI. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - October 22, 2019 Category: Epidemiology Authors: Diana Juri ć, Adriana Bolić, Shelly Pranić, Ana Marušić Tags: Original Article Source Type: research

No consistent evidence of data availability bias existed in recent individual participant data meta-analyses: A meta-epidemiological study
To assess trial-level factors associated with the contribution of individual participant data (IPD) to IPD meta-analyses, and to quantify the data availability bias, namely the difference between the effect estimates of trials contributing IPD and those not contributing IPD in the same systematic reviews (SRs). (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - October 22, 2019 Category: Epidemiology Authors: Yasushi Tsujimoto, Tomoko Fujii, Akira Onishi, Kenji Omae, Yan Luo, Hissei Imai, Sei Takahashi, Takahiro Itaya, Claire Pinson, Sarah J. Nevitt, Toshi A. Furukawa Tags: Original Article Source Type: research

Thresholds for clinical importance were established to improve interpretation of the EORTC QLQ-C30 in clinical practice and research
To establish thresholds for clinical importance (TCIs) for the five functioning and nine symptom scales of the EORTC QLQ-C30 questionnaire. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - October 19, 2019 Category: Epidemiology Authors: Johannes M. Giesinger, Fanny L.C. Loth, Neil K. Aaronson, Juan I. Arraras, Giovanni Caocci, Fabio Efficace, Mogens Groenvold, Marieke van Leeuwen, Morten Aa Petersen, John Ramage, Krzysztof A. Tomaszewski, Teresa Young, Bernhard Holzner, EORTC Quality of Tags: Original Article Source Type: research

Reasons for “awaiting classification” studies are often inadequate and underreported: a cross-sectional analysis of cochrane reviews
Whenever systematic review authors find a poorly reported study, the decision on whether to include it or not may be inaccurate as enough information does not exist for endorsing its conformity with the eligibility criteria. As the study may contribute to the analysis when the missing information become available, the authors may choose to code it as an “awaiting classification study” (ACS). Therefore, ACS is a study that has been retrieved but cannot be assessed for inclusion until additional information is obtained [1]. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - October 14, 2019 Category: Epidemiology Authors: Rafael Leite Pacheco, Carolina Oliveira Cruz Latorraca, Ana Luiza Cabrera Martimbianco, Rachel Riera Tags: Letter to the Editor Source Type: research

Reasons for ‘awaiting classification’ studies are often inadequate and underreported: a cross-sectional analysis of Cochrane reviews
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - October 14, 2019 Category: Epidemiology Authors: Rafael Leite Pacheco, Carolina Oliveira Cruz Latorraca, Ana Luiza Cabrera Martimbianco, Rachel Riera Tags: Letter to the editor Source Type: research