GRADE Guidelines: 20. Assessing the certainty of evidence in the importance of outcomes or values and preferences – Inconsistency, Imprecision, and other Domains
To provide GRADE guidance for assessing inconsistency, imprecision, and other domains for the certainty of evidence about the relative importance of outcomes. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 22, 2018 Category: Epidemiology Authors: Yuan Zhang, Pablo Alonso Coello, Gordon Guyatt, Juan Jose Yepes-Nu ñez, Elie A. Akl, Glen Hazlewood, Hector Pardo-Hernandez, Itziar Etxeandia-Ikobaltzeta, Amir Qaseem, John W. Williams, Peter Tugwell, Signe Flottorp, Yaping Chang, Yuqing Zhang, Reem A. M Tags: Original Article Source Type: research

Applying GRADE to a network meta-analysis of antidepressants led to more conservative conclusions
To explore the impact of applying the GRADE approach to assess the certainty of the evidence in a published network meta-analysis (NMA) of antidepressant therapies. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 22, 2018 Category: Epidemiology Authors: Ashley Bonner, Paul E. Alexander, Romina Brignardello-Petersen, Toshi A. Furukawa, Reed A. Siemieniuk, Yuan Zhang, Wojtek Wiercioch, Ivan D. Florez, Yutong Fei, Arnav Agarwal, Juan Jos é Yepes-Nuñez, Joseph Beyene, Holger Schünemann, Gordon H. Guyatt Source Type: research

Cochrane Acute Respiratory Infections Group ’s Stakeholder Engagement Project identified systematic review priority areas
We report the results of a prioritisation project, aiming to identify highest priority systematic review topics. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 22, 2018 Category: Epidemiology Authors: Anna Mae Scott, Justin Clark, Liz Dooley, Ann Jones, Mark Jones, Chris Del Mar Tags: Original Article Source Type: research

The authors respond
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 22, 2018 Category: Epidemiology Authors: Aviv Ladanie Tags: Letter to the editor Source Type: research

Rasch analysis suggested that items from the template for intervention  description and replication (TIDieR) checklist can be summed to create a score
The aim of this study was to construct and evaluate a summary score of reporting completeness based on the Template for Intervention Description and Replication (TIDieR). (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 21, 2018 Category: Epidemiology Authors: Tie P. Yamato, Chris G. Maher, Bruno T. Saragiotto, Mark J. Catley, Anne M. Moseley Tags: Original Article Source Type: research

Minimum clinically important differences in chronic pain vary considerably by baseline pain and methodological factors: systematic review of empirical studies
The minimum clinically important difference (MCID) is used to interpret the relevance of treatment effects, e.g., when developing clinical guidelines, evaluating trial results or planning sample sizes. There is currently no agreement on an appropriate MCID in chronic pain and little is known about which contextual factors cause variation. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 21, 2018 Category: Epidemiology Authors: Mette Frahm Olsen, Eik Bjerre, Maria Damkj ær Hansen, Britta Tendal, Jørgen Hilden, Asbjørn Hróbjartsson Tags: Review Source Type: research

The Delta likelihood ratio does not incorporate study power. Author response
We thank the author for his interesting critique of our paper [1]. With regard to the false positive rate being dependent on alpha rather than the P-value, we point out that alpha is set to be equivalent to the P-value; thus, the two equations shown in the letter are identical. It is illogical to have a positive likelihood ratio less than one or a negative likelihood ratio greater than one. The only way to guarantee this does not occur is to set  alpha equal to the P-value, given that that from Equation 3 in our paper, power will always be greater than alpha and hence greater than the P-value. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 21, 2018 Category: Epidemiology Authors: Nicholas Adams Tags: Letter to the Editor Source Type: research

The delta likelihood ratio does not incorporate study power
In a recent issue of the JCE, Adams and O'Reilly presented a creative approach to inference and communication of scientific results [1]. Having explored a similar methodology in my own ongoing work in this area, I offer some critical thoughts on their paper. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 21, 2018 Category: Epidemiology Authors: Patrick S. Phelan Tags: Letter to the Editor Source Type: research

Response to letter from Patrick S. Phelan
We thank the author for his interesting critique of our paper [1]. With regard to the false positive rate being dependent on alpha rather than the P-value, we point out that alpha is set to be equivalent to the P-value; thus, the two equations shown in the letter are identical. It is illogical to have a positive likelihood ratio less than one or a negative likelihood ratio greater than one. The only way to guarantee this does not occur is to set  alpha equal to the P-value, given that that from Equation 3 in our paper, power will always be greater than alpha and hence greater than the P-value. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 21, 2018 Category: Epidemiology Authors: Nicholas Adams Tags: Letter to the Editor Source Type: research

Statistician Credit for Collaboration Requires Extending the Number of Cited Authors in Research Publications
Statisticians collaborate with colleagues to provide advice on research. Most journals shorten the cited author list to save space. Statisticians are short-changed when it comes to proper recognition in the citations of published papers. Some journals cite First 3 authors, et al., First 6 authors, et al., and a few First 30, et al. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 21, 2018 Category: Epidemiology Authors: Charles H. Goldsmith, Yanglin Jin, Feng He, Lehana Thabane Tags: Letter to the editor Source Type: research

Rasch analysis suggested that items from the Template for Intervention Description and Replication (TIDieR) checklist can be summed to create a score
The aim of this study was to construct and evaluate a summary score of reporting completeness based on the Template for Intervention Description and Replication (TIDieR). (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 21, 2018 Category: Epidemiology Authors: Tie P. Yamato, Chris G. Maher, Bruno T. Saragiotto, Mark J. Catley, Anne M. Moseley Tags: Original Article Source Type: research

Qualitative research is a fundamental scientific process
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 21, 2018 Category: Epidemiology Authors: Joanna E.M. Sale, Stephen Thielke Tags: Commentary Source Type: research

Health literacy in chronic disease management: a matter of interaction
Health literacy plays a crucial role in chronic disease management. To comprehensively manage chronic conditions on a daily basis, individuals must be able to assess, understand, evaluate and use health information. Several key publications emphasise that health literacy is not merely a matter of individual skills, but that it is highly dependent on the accessibility of healthcare systems, the communication skills of healthcare professionals, and the level of complexity of health information. However, the literature indicates that health literacy is mainly framed and measured as an individual attribute in research. (Source...
Source: Journal of Clinical Epidemiology - May 21, 2018 Category: Epidemiology Authors: Iris van der Heide, Iraj Poureslami, Wayne Mitic, Jessica Shum, Irving Rootman, J. Mark FitzGerald Tags: Commentary Source Type: research

Evidence on the measurement properties of health-related quality of life instruments is largely missing in patients with low back pain, a systematic review
To synthesize the measurement properties of five health-related quality of life (HRQoL) instruments [Short Form 36 (SF-36), Short Form 12 (SF-12), EuroQol 5D (EQ-5D), Nottingham Health Profile (NHP), PROMIS Global Health (PROMIS-GH-10)] in patients with low back pain (LBP). (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 21, 2018 Category: Epidemiology Authors: Alessandro Chiarotto, Caroline B. Terwee, Steven J. Kamper, Maarten Boers, Raymond W. Ostelo Tags: Review Source Type: research

Off-label prescription: Experience is a gloomy lantern that does not even illuminate its bearer
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 21, 2018 Category: Epidemiology Authors: Alain Braillon Tags: Letter to the editor Source Type: research

Pre-Data Likelihood Ratios and Bayes Factor Upper Bounds – A Comment on Adams & O ’Reilly (2017)
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 21, 2018 Category: Epidemiology Authors: Patrick S. Phelan Tags: Letter to the editor Source Type: research

Minimum clinically important differences in chronic pain vary considerable by baseline pain and methodological factors: Systematic review of empirical studies.
The minimum clinically important difference (MCID) is used to interpret the relevance of treatment effects, e.g. when developing clinical guidelines, evaluating trial results or planning sample sizes. There is currently no agreement on an appropriate MCID in chronic pain and little is known about which contextual factors cause variation. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 21, 2018 Category: Epidemiology Authors: Mette Frahm Olsen, Eik Bjerre, Maria Damkj ær Hansen, Britta Tendal, Jørgen Hilden, Asbjørn Hróbjartsson Tags: Review Source Type: research

Response to letter from Patrick S Phelan
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 21, 2018 Category: Epidemiology Authors: Nicholas Adams Tags: Letter to the editor Source Type: research

Corrigendum to “Advances in the GRADE approach to rate the certainty in estimates from a network meta-analysis” [J Clin Epidemiol 2018;93:36-44]
In the above-mentioned article, an error was noticed in Table  2: In rows 4 and 5 (“We should not…” and “In presence of…”) and columns 4 and 8 where it says HIGH, it should say MODERATE and where it says LOW, it should say VERY LOW. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 19, 2018 Category: Epidemiology Authors: Romina Brignardello-Petersen, Ashley Bonner, Paul E. Alexander, Reed A. Siemieniuk, Toshi A. Furukawa, Bram Rochwerg, Glen S. Hazlewood, Waleed Alhazzani, Reem A. Mustafa, M. Hassan Murad, Milo A. Puhan, Holger J. Sch ünemann, Gordon H. Guyatt, GRADE Wor Tags: Corrigendum Source Type: research

Cover 2 Editorial Board
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 19, 2018 Category: Epidemiology Source Type: research

Table of Contents
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 19, 2018 Category: Epidemiology Source Type: research

Research-agenda bias
The accumulation of clinical evidence by making systematic reviews and archiving them together in an orderly and accessible manner enables us to know what we really know. At the same time, complementary to what we know, it offers us the possibility to better recognize what we do n ót know but need to know, and what next research steps should therefore be. In other words, knowing our ‘evidence base’ can also give guidance for our “evidence chase”, paving the way for clinically important new research [1]. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 19, 2018 Category: Epidemiology Authors: J. Andr é Knottnerus, Peter Tugwell Tags: Editorial Source Type: research

Measurement error and timing of predictor values for multivariable risk prediction models are poorly reported
Measurement error in predictor variables may threaten the validity of clinical prediction models. We sought to evaluate the possible extent of the problem. A secondary objective was to examine whether predictors are measured at the intended moment of model use. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 18, 2018 Category: Epidemiology Authors: Rebecca Whittle, George Peat, John Belcher, Gary S. Collins, Richard D. Riley Tags: Review Source Type: research

Efficacy of antipsychotics in dementia depended on the definition of patients and outcomes: a meta-epidemiological study
Postulating that efficacy of antipsychotics for agitation and psychosis in dementia is best estimated in trials among patients with these symptoms and with symptom-specific outcomes, we investigated whether clinically broader definitions affected the pooled efficacy. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 18, 2018 Category: Epidemiology Authors: C.H.W. Smeets, S.U. Zuidema, T.A. Hulshof, M. Smalbrugge, D.L. Gerritsen, R.T.C.M. Koopmans, H.J. Luijendijk Source Type: research

Reducing waste in evaluation studies on fall risk assessment tools for older people
To critically appraise the recognition of methodological challenges in evaluation studies on assessment tools and nurses ’ clinical judgement on fall risk in older people and suggest how to reduce respective research waste. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 18, 2018 Category: Epidemiology Authors: Gabriele Meyer, Ralph M öhler, Sascha Köpke Tags: Commentary Source Type: research

High and unclear risk of bias assessments are predominant in diagnostic accuracy studies included in Cochrane reviews
This study reports the risk of bias (ROB) of primary studies included in systematic reviews of diagnostic accuracy. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 17, 2018 Category: Epidemiology Authors: Nicola Di Girolamo, Alexandra Winter, Reint Meursinge Reynders Tags: Original Article Source Type: research

Studies on drug switchability showed heterogeneity in methodological approaches: a scoping review
The objective of this study was to conduct a scoping review of observational studies on drug switchability to identify methodological strategies adopted to deal with bias and confounding. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 17, 2018 Category: Epidemiology Authors: Valeria Belleudi, Francesco Trotta, Simona Vecchi, Laura Amato, Antonio Addis, Marina Davoli Tags: Review Source Type: research

Predominance of high or unclear risk of bias assessments in diagnostic accuracy studies included in Cochrane reviews
This study reports the risk of bias of primary studies included in systematic reviews of diagnostic accuracy. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 17, 2018 Category: Epidemiology Authors: Nicola Di Girolamo, Alexandra Winter, Reint Meursinge Reynders Source Type: research

Polypharmacy, defined as taking five or more drugs, is inadequate in the cardiovascular setting
By how much polypharmacy (defined by number of drugss) differs from polyactive ingredient use (defined by the number of pharmacologically active ingredients) has not been assessed. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 17, 2018 Category: Epidemiology Authors: Nazanin Abolhassani Tags: Original Article Source Type: research

Title: Studies on drug switchability showed heterogeneity in methodological approaches: a scoping review
Several drugs share the same therapeutic indication, including those undergoing patent expiration. Concerns on the interchangeability are frequent in clinical practice, challenging the evaluation of switchability through observational research. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - May 17, 2018 Category: Epidemiology Authors: Valeria Belleudi, Francesco Trotta, Simona Vecchi, Laura Amato, Antonio Addis, Marina Davoli Source Type: research

Psychometric development of the Upper Limb Lymphedema Quality of Life Questionnaire demonstrated the patient-reported outcome measure to be a robust measure for breast cancer –related lymphedema
To develop and undertake initial validation of a patient-reported outcome measure to assess health-related quality of life in patients with breast cancer –related upper limb lymphedema (ULL). (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 30, 2018 Category: Epidemiology Authors: Angela E. Williams, Frances Rapport, Ian T. Russell, Hayley A. Hutchings Tags: Original Article Source Type: research

Psychometric development of the Upper Limb Lymphoedema Questionnaire demonstrated the patient-reported outcome measure to be a robust measure for breast cancer-related lymphoedema
To develop and undertake initial validation of a patient-reported outcome measure (PROM) to assess health-related quality of life in patients with breast cancer-related upper limb lymphedema (ULL). (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 30, 2018 Category: Epidemiology Authors: Angela E. Williams, Frances Rapport, Ian T. Russell, Hayley A. Hutchings Source Type: research

Systematic Review Qualitative Methods Series reflect the increasing maturity in qualitative methods
JCE is publishing an increasing number of papers on qualitative research. This reflects the growing maturity of qualitative methods as well as the need for increased emphasis on mixed methods approaches to tackle the complex problems in health and healthcare that is being recognised in many graduate programs. In this issue, we are pleased to showcase this series of 6 papers on systematic review qualitative methods that will form the basis for the Qualitative Methods chapter in the forthcoming Cochrane Handbook. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 26, 2018 Category: Epidemiology Authors: Peter Tugwell, J. Andr é Knottnerus, Jessie McGowan, Andrea C. Tricco Tags: Editorial Source Type: research

Editorial Board
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 26, 2018 Category: Epidemiology Source Type: research

Table of Contents
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 26, 2018 Category: Epidemiology Source Type: research

Investigation of the “m” in the cmRCT (cohort multiple randomized controlled trial) design revealed dependence between trial results
Relton et  al. [1] revolutionarily proposed the cohort multiple randomized controlled trial (cmRCT) design in 2010, which nowadays is also referred to as the “trials-within-cohort” design. The cmRCT starts with enrollment of subjects in a (large) cohort. At cohort entry, all subjects are asked informed c onsent for participation in the cohort and for consent to be randomized in future trials [2]. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 26, 2018 Category: Epidemiology Authors: Rolf H.H. Groenwold, Maarten van Smeden Tags: Commentary Source Type: research

No firm evidence that lack of blinding affects estimates of mortality in randomized clinical trials of intensive care interventions: a systematic review and meta-analysis
To evaluate the effect of blinding on mortality effect estimates in randomized clinical trials (RCTs) in adult intensive care unit (ICU) patients. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 26, 2018 Category: Epidemiology Authors: Carl Thomas Anthon, Anders Granholm, Anders Perner, Jon Henrik Laake, Morten Hylander M øller Tags: Review Source Type: research

Randomized controlled trials in pediatric patients had higher completion rates than adult trials: a cross-sectional study
This study aimed to evaluate the impact of the age of participants on completion rates of randomized controlled trials (RCTs). (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 26, 2018 Category: Epidemiology Authors: Edouard Dufetelle, Geert W. ‘t Jong, Florentia Kaguelidou Tags: Original Article Source Type: research

Investigation of the “m” in the cmRCT design revealed dependence between trial results
Relton et  al. [1] revolutionarily proposed the cohort multiple randomized controlled trial (cmRCT) design in 2010, which nowadays is also referred to as the “trials-within-cohort” design. The cmRCT starts with enrollment of subjects in a (large) cohort. At cohort entry, all subjects are asked informed c onsent for participation in the cohort and for consent to be randomized in future trials [2]. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 26, 2018 Category: Epidemiology Authors: Rolf H.H. Groenwold, Maarten van Smeden Tags: Commentary Source Type: research

Randomized controlled trials in pediatric patients had higher completion rates than adult trials - a cross-sectional study
This study aimed to evaluate the impact of the age of participants on completion rates of randomized controlled trials (RCTs). (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 26, 2018 Category: Epidemiology Authors: Edouard Dufetelle, Geert W. ‘t Jong, Florentia Kaguelidou Source Type: research

Registered trials report less beneficial treatment effects than unregistered ones: a meta-epidemiological study in orthodontics
Clinical trial registration is widely recommended, since it allows tracking of trials that helps ensure full and unbiased reporting of their results. Aim of the present overview was to provide empirical evidence on bias associated with trial registration via a meta-epidemiological approach. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 26, 2018 Category: Epidemiology Authors: Spyridon N. Papageorgiou, Guilherme M. Xavier, Martyn T. Cobourne, Theodore Eliades Source Type: research

No firm evidence that lack of blinding affects estimates of mortality in randomised clinical trials of intensive care interventions: a systematic review and meta-analysis
To evaluate the effect of blinding on mortality effect estimates in randomised clinical trials (RCTs) in adult intensive care unit (ICU) patients. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 26, 2018 Category: Epidemiology Authors: Carl Thomas Anthon, Anders Granholm, Anders Perner, Jon Henrik Laake, Morten Hylander M øller Source Type: research

Randomized controlled trials in pediatric patients had higher completion rates than adult studies - a cross-sectional study.
This study aimed to evaluate the impact of the age of participants on completion rates of randomized controlled trials (RCTs). (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 26, 2018 Category: Epidemiology Authors: Edouard Dufetelle, Geert W. ‘t Jong, Florentia Kaguelidou Source Type: research

Investigation of the ‘m’ in the cmRCT design revealed dependence between trial results
(Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 26, 2018 Category: Epidemiology Authors: Rolf H.H. Groenwold, Maarten van Smeden Tags: Commentary Source Type: research

National characteristics and trends in antiretroviral treatment in Australia can be accurately estimated using a large clinical cohort
Cohort studies are often used as a national surveillance tool to monitor trends in HIV treatment and morbidity outcomes. However, there are limited studies validating the accuracy of using cohorts as a representation of the overall HIV-positive population. We compared data from a large Australian HIV-positive cohort study (Australian HIV Observational Database [AHOD]) and a 10% longitudinal sample from Australia's subsidized prescription medication scheme (Pharmaceutical Benefits Scheme [PBS]) to assess the use of cohorts for providing representative data for surveillance and monitoring purposes. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 25, 2018 Category: Epidemiology Authors: Robin Huang, Kathy Petoumenos, Richard T. Gray, Hamish McManus, Nila Dharan, Rebecca Guy, David A. Cooper Tags: Original Article Source Type: research

Antiretroviral Therapy Treatment in Australia – Comparing the Australian HIV Observational Database Using a National Representative Database of Prescription Data
Cohort studies are often used as a national surveillance tool to monitor trends in HIV treatment and morbidity outcomes. However, there are limited studies validating the accuracy of using cohorts as a representation of the overall HIV-positive population. We compared data from a large Australian HIV-positive cohort study (Australian HIV Observational Database (AHOD)) and a 10% longitudinal sample from Australia ’s subsidized prescription medication scheme (the Pharmaceutical Benefits Scheme (PBS)) to assess the use of cohorts for providing representative data for surveillance and monitoring purposes. (Source: Journa...
Source: Journal of Clinical Epidemiology - April 25, 2018 Category: Epidemiology Authors: Robin Huang, Kathy Petoumenos, Richard T. Gray, Hamish McManus, Nila Dharan, Rebecca Guy, David A. Cooper Source Type: research

Remote or on-site visits were feasible for the initial setup meetings with hospitals in a multicenter surgical trial: an embedded randomized trial
To investigate the effects, costs, and feasibility of providing on-site compared with remote meetings to set up hospital sites in a multicenter, surgical randomized controlled trial. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 18, 2018 Category: Epidemiology Authors: Laura Jefferson, Caroline Fairhurst, Stephen Brealey, Elizabeth Coleman, Liz Cook, Catherine Hewitt, Ada Keding, Matthew Northgraves, Amar Rangan, Garry A. Tew, David J. Torgerson, Joseph Dias Tags: Original Article Source Type: research

Age, HIV status, and research context determined attrition in a longitudinal cohort in Nigeria
We explored determinants of attrition in a longitudinal cohort study in Nigeria. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 18, 2018 Category: Epidemiology Authors: Eileen O. Dareng, Yinka Olaniyan, Sally N. Adebamowo, Olabimpe R. Eseyin, Michael K. Odutola, Elonna M. Obiefuna, Richard A. Offiong, Paul P. Pharoah, Clement A. Adebamowo Tags: Original Article Source Type: research

Remote or on-site visits were feasible for the initial set-up meetings with hospitals in a multi-centre surgical trial: an embedded randomised trial
To investigate the effects, costs and feasibility of providing on-site compared with remote meetings to set-up hospital sites in a multi-centre, surgical randomised controlled trial. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 18, 2018 Category: Epidemiology Authors: Laura Jefferson, Caroline Fairhurst, Stephen Brealey, Elizabeth Coleman, Liz Cook, Catherine Hewitt, Ada Keding, Matthew Northgraves, Amar Rangan, Garry A. Tew, David J. Torgerson, Joseph Dias Source Type: research

Age, HIV status and research context determined attrition in a longitudinal cohort in Nigeria
We explored determinants of attrition a longitudinal cohort study in Nigeria. (Source: Journal of Clinical Epidemiology)
Source: Journal of Clinical Epidemiology - April 18, 2018 Category: Epidemiology Authors: Eileen O. Dareng, Yinka Olaniyan, Sally N. Adebamowo, Olabimpe R. Eseyin, Michael K. Odutola, Elonna M. Obiefuna, Richard A. Offiong, Paul P. Pharoah, Clement A. Adebamowo Source Type: research