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BMC Medical Research Methodology

Ausgabe 1/2023

Inhalt (302 Artikel)

Open Access Research

Individual patient data to allow a more elaborated comparison of trial results with real-world outcomes from second-line immunotherapy in NSCLC

R. K. Ismail, F. M. N. H. Schramel, M. van Dartel, A. M. G. Pasmooij, C. M. Cramer-van der Welle, D. L. Hilarius, A. de Boer, M. W. J. M. Wouters, E. M. W. van de Garde

Open Access Research

A gated group sequential design for seamless Phase II/III trial with subpopulation selection

Guanhong Miao, Jason J. Z. Liao, Jing Yang, Keaven Anderson

Open Access Research

Detection of grey zones in inter-rater agreement studies

Haydar Demirhan, Ayfer Ezgi Yilmaz

Open Access Research

Estimation of marginal structural models under irregular visits and unmeasured confounder: calibrated inverse probability weights

Sumeet Kalia, Olli Saarela, Michael Escobar, Rahim Moineddin, Michelle Greiver

Open Access Research

Predicting the risk of a clinical event using longitudinal data: the generalized landmark analysis

Yi Yao, Liang Li, Brad Astor, Wei Yang, Tom Greene

Open Access Research

Semiparametric modelling of diabetic retinopathy among people with type II diabetes mellitus

Bezalem Eshetu Yirdaw, Legesse Kassa Debusho

Open Access Research

Machine learning for predicting neurodegenerative diseases in the general older population: a cohort study

Gloria A. Aguayo, Lu Zhang, Michel Vaillant, Moses Ngari, Magali Perquin, Valerie Moran, Laetitia Huiart, Rejko Krüger, Francisco Azuaje, Cyril Ferdynus, Guy Fagherazzi

Open Access Research

The reporting of prognostic prediction models for obstetric care was poor: a cross-sectional survey of 10-year publications

Chunrong Liu, Yana Qi, Xinghui Liu, Meng Chen, Yiquan Xiong, Shiyao Huang, Kang Zou, Jing Tan, Xin Sun

Open Access Research

Misspecification of confounder-exposure and confounder-outcome associations leads to bias in effect estimates

Noah A. Schuster, Judith J. M. Rijnhart, Lisa C. Bosman, Jos W. R. Twisk, Thomas Klausch, Martijn W. Heymans

Open Access Research

Power and sample size analysis for longitudinal mixed models of health in populations exposed to environmental contaminants: a tutorial

Kylie K. Harrall, Keith E. Muller, Anne P. Starling, Dana Dabelea, Kelsey E. Barton, John L. Adgate, Deborah H. Glueck

Open Access Research

In search of a ‘pan-European value set’; application for EQ-5D-3L

Ayesha Sajjad, Matthijs M. Versteegh, Irene Santi, Jan Busschbach, Judit Simon, Leona Hakkaart-van Roijen

Open Access Research

Grouped data with survey revision

Chung-Han Liang, Da-Wei Wang, Mei-Lien Pan

Open Access Research

Recruitment and retention into longitudinal health research from an adolescent perspective: a qualitative study

Stephanie T. Jong, Rebecca Stevenson, Eleanor M. Winpenny, Kirsten Corder, Esther M. F. van Sluijs

Open Access Research

Intentional and actional components of engaged participation in public health research studies: qualitative synthesis of a recruitment and retention process into the theory-informed INTACT-RS framework

Jonas Lander, Andrea Heiberger, Julia Von Sommoggy, Anja Alexandra Schulz, Carolin Dresch, Hala Altawil, Gwendolyn Schmitt, Markus Antonius Wirtz

Open Access Research article

A cross-sectional study of the endorsement proportion of reporting guidelines in 1039 Chinese medical journals

Yuting Duan, Lingyun Zhao, Yanfang Ma, Jingyuan Luo, Juexuan Chen, Jiangxia Miao, Xuan Zhang, David Moher, Zhaoxiang Bian

Open Access Research

Patient-reported outcome measures for physical function in cancer patients: content comparison of the EORTC CAT Core, EORTC QLQ-C30, SF-36, FACT-G, and PROMIS measures using the International Classification of Functioning, Disability and Health

T Schurr, F Loth, E Lidington, C Piccinin, JI Arraras, M Groenvold, B Holzner, M van Leeuwen, MA Petersen, H Schmidt, T Young, JM Giesinger, Juan I. Arraras, Mogens Groenvold, Marieke van Leeuwen

Open Access Research

Comparison of State-of-the-Art Neural Network Survival Models with the Pooled Cohort Equations for Cardiovascular Disease Risk Prediction

Yu Deng, Lei Liu, Hongmei Jiang, Yifan Peng, Yishu Wei, Zhiyang Zhou, Yizhen Zhong, Yun Zhao, Xiaoyun Yang, Jingzhi Yu, Zhiyong Lu, Abel Kho, Hongyan Ning, Norrina B. Allen, John T. Wilkins, Kiang Liu, Donald M. Lloyd-Jones, Lihui Zhao

Open Access Research

Multivariate longitudinal data for survival analysis of cardiovascular event prediction in young adults: insights from a comparative explainable study

Hieu T. Nguyen, Henrique D. Vasconcellos, Kimberley Keck, Jared P. Reis, Cora E. Lewis, Steven Sidney, Donald M. Lloyd-Jones, Pamela J. Schreiner, Eliseo Guallar, Colin O. Wu, João A.C. Lima, Bharath Ambale-Venkatesh

Open Access COVID-19 Research

Unraveling the COVID-19 hospitalization dynamics in Spain using Bayesian inference

Alberto Aleta, Juan Luis Blas-Laína, Gabriel Tirado Anglés, Yamir Moreno

Open Access Correction

Correction: Individual patient data to allow a more elaborated comparison of trial results with real-world outcomes from second-line immunotherapy in NSCLC

R. K. Ismail, F. M. N. H. Schramel, M. van Dartel, A. M. G. Pasmooij, C. M. Cramer-van der Welle, D. L. Hilarius, A. de Boer, M. W. J. M. Wouters, E. M. W. van de Garde

Open Access Research

Towards full clinical trial registration and results publication: longitudinal meta-research study in Northwestern and Central Switzerland

Katharina Klatte, Constantin Sluka, Viktoria Gloy, Ala Taji Heravi, Christof Schönenberger, Nienke Jones, Elena Brunnschweiler, Christiane Pauli-Magnus, Matthias Briel

Open Access Research

Construction of the Armenian Surname List (ASL) for public health research

Ani S. Movsisyan, Kiumarss Nasseri, Theresa H. Keegan

Open Access Research

Minimizing population health loss due to scarcity in OR capacity: validation of quality of life input

Benjamin Y. Gravesteijn, Kira S. van Hof, Eline Krijkamp, Franck Asselman, C. René Leemans, Anouk M.I.A. van Alphen, Henriëtte van der Horst, Guy Widdershoven, Leonie Baatenburg de Jong, Hester Lingsma, Jan Busschbach, Rob Baatenburg de Jong

Open Access Correction

Correction: Machine learning for predicting neurodegenerative diseases in the general older population: a cohort study

Gloria A. Aguayo, Lu Zhang, Michel Vaillant, Moses Ngari, Magali Perquin, Valerie Moran, Laetitia Huiart, Rejko Krüger, Francisco Azuaje, Cyril Ferdynus, Guy Fagherazzi

Open Access Research

Primary and secondary data in emergency medicine health services research – a comparative analysis in a regional research network on multimorbid patients

Anna Schneider, Andreas Wagenknecht, Hanna Sydow, Dorothee Riedlinger, Felix Holzinger, Andrea Figura, Johannes Deutschbein, Thomas Reinhold, Mareen Pigorsch, Ulrike Stasun, Liane Schenk, Martin Möckel

Open Access Research

The empirical estimate of the survival and variance using a weighted composite endpoint

Majid Nabipoor, Cynthia M. Westerhout, Sarah Rathwell, Jeffrey A. Bakal

Open Access Research

When a joint model should be preferred over a linear mixed model for analysis of longitudinal health-related quality of life data in cancer clinical trials

Célia Touraine, Benjamin Cuer, Thierry Conroy, Beata Juzyna, Sophie Gourgou, Caroline Mollevi

Open Access Research

Adjusting for outcome risk factors in immigrant datasets: total or direct effects?

Roy Miodini Nilsen, Kari Klungsøyr, Hein Stigum

Open Access Research

Estimating incidence of type 1 and type 2 diabetes using prevalence data: the SEARCH for Diabetes in Youth study

Annika Hoyer, Ralph Brinks, Thaddäus Tönnies, Sharon H. Saydah, Ralph B. D’Agostino Jr., Jasmin Divers, Scott Isom, Dana Dabelea, Jean M. Lawrence, Elizabeth J. Mayer-Davis, Catherine Pihoker, Lawrence Dolan, Giuseppina Imperatore

Open Access Research

Propensity score analysis with missing data using a multi-task neural network

Shu Yang, Peipei Du, Xixi Feng, Daihai He, Yaolong Chen, Linda L. D. Zhong, Xiaodong Yan, Jiawei Luo

Open Access Research

Should multiple imputation be stratified by exposure group when estimating causal effects via outcome regression in observational studies?

Jiaxin Zhang, S Ghazaleh Dashti, John B. Carlin, Katherine J. Lee, Margarita Moreno-Betancur

Open Access Research

Agreement test of P value versus Bayes factor for sample means comparison: analysis of articles from the Angle Orthodontist journal

Natchalee Srimaneekarn, Pattamon Leelachaikul, Sasipa Thiradilok, Somchai Manopatanakul

Open Access Software

CHARMS and PROBAST at your fingertips: a template for data extraction and risk of bias assessment in systematic reviews of predictive models

Borja M. Fernandez-Felix, Jesus López-Alcalde, Marta Roqué, Alfonso Muriel, Javier Zamora

Open Access COVID-19 Research

Data quality considerations for evaluating COVID-19 treatments using real world data: learnings from the National COVID Cohort Collaborative (N3C)

Hythem Sidky, Jessica C. Young, Andrew T. Girvin, Eileen Lee, Yu Raymond Shao, Nathan Hotaling, Sam Michael, Kenneth J. Wilkins, Soko Setoguchi, Michele Jonsson Funk, G. Caleb Alexander, Benjamin Bates, Christopher G. Chute, Jayme L. Dahlin, Ken Gersing, Melissa A. Haendel, Hemalkumar B. Mehta, Emily R. Pfaff, David Sahner

Open Access Correction

Correction: Differences between experimental and placebo arms in manual therapy trials: a methodological review

Giandomenico D’Alessandro, Nuria Ruffini, Alessandro Aquino, Matteo Galli, Mattia Innocenti, Marco Tramontano, Francesco Cerritelli

Open Access Research

Validation of Oura ring energy expenditure and steps in laboratory and free-living

Emilia Kristiansson, Jonatan Fridolfsson, Daniel Arvidsson, Agneta Holmäng, Mats Börjesson, Ulrika Andersson-Hall

Open Access Research

Statistical models versus machine learning for competing risks: development and validation of prognostic models

Georgios Kantidakis, Hein Putter, Saskia Litière, Marta Fiocco

Open Access Research

Practical basket design for binary outcomes with control of family-wise error rate

Junichi Asano, Hiroyuki Sato, Akihiro Hirakawa

Open Access Research

Reporting quality of scoping reviews in dental public health

Lara Dotto, Mateus Bertolini Fernandes dos Santos, Rafael Sarkis-Onofre

Open Access COVID-19 Research

Recruiting and retaining community-based participants in a COVID-19 longitudinal cohort and social networks study: lessons from Victoria, Australia

Thi Nguyen, Alexander J. Thomas, Phoebe Kerr, Ashleigh C. Stewart, Anna Lee Wilkinson, Long Nguyen, Aimée Altermatt, Kathryn Young, Katherine Heath, Anna Bowring, Stephanie Fletcher-Lartey, Dean Lusher, Sophie Hill, Alisa Pedrana, Mark Stoové, Katherine Gibney, Margaret Hellard

Open Access COVID-19 Research

Addressing misclassification bias in vaccine effectiveness studies with an application to Covid-19

Paolo Eusebi, Niko Speybroeck, Sonja Hartnack, Jacob Stærk-Østergaard, Matthew J. Denwood, Polychronis Kostoulas

Open Access Research

Exploring data reduction strategies in the analysis of continuous pressure imaging technology

Mingkai Peng, Danielle A. Southern, Wrechelle Ocampo, Jaime Kaufman, David B. Hogan, John Conly, Barry W. Baylis, Henry T. Stelfox, Chester Ho, William A. Ghali

Open Access Research

A clinical phase I dose-finding design with adaptive shrinking boundaries for drug combination trials

Zhaohang Li, Ze Xu, Aijun Zhang, Guanpeng Qi, Zuojing Li

Open Access Correction

Correction to: A tutorial on pilot studies: the what, why and how

Lehana Thabane, Jinhui Ma, Rong Chu, Ji Cheng, Afisi Ismaila, Lorena P Rios, Reid Robson, Marroon Thabane, Lora Giangregorio, Charles H Goldsmith

Open Access Research

Measuring the impact of zero-cases studies in evidence synthesis practice using the harms index and benefits index (Hi-Bi)

Chang Xu, Luis Furuya-Kanamori, Lifeng Lin, Liliane Zorzela, Tianqi Yu, Sunita Vohra

Open Access Research

User experience of applying AMSTAR 2 to appraise systematic reviews of healthcare interventions: a commentary

Karina Karolina De Santis, Dawid Pieper, Robert C. Lorenz, Uta Wegewitz, Waldemar Siemens, Katja Matthias

Open Access Research

Accounting for complex intracluster correlations in longitudinal cluster randomized trials: a case study in malaria vector control

Yongdong Ouyang, Manisha A. Kulkarni, Natacha Protopopoff, Fan Li, Monica Taljaard

Open Access Research

A spatial obesity risk score for describing the obesogenic environment using kernel density estimation: development and parameter variation

Maximilian Präger, Christoph Kurz, Rolf Holle, Werner Maier, Michael Laxy

Open Access Research

IBIS: identify biomarker-based subgroups with a Bayesian enrichment design for targeted combination therapy

Xin Chen, Jingyi Zhang, Liyun Jiang, Fangrong Yan

Open Access Research

A method for generating synthetic longitudinal health data

Lucy Mosquera, Khaled El Emam, Lei Ding, Vishal Sharma, Xue Hua Zhang, Samer El Kababji, Chris Carvalho, Brian Hamilton, Dan Palfrey, Linglong Kong, Bei Jiang, Dean T. Eurich

Open Access Research

Strong recommendations from low certainty evidence: a cross-sectional analysis of a suite of national guidelines

Ming Chuen Chong, Melissa K. Sharp, Susan M. Smith, Michelle O’Neill, Máirín Ryan, Rosarie Lynch, Kamal R. Mahtani, Barbara Clyne

Open Access Research

Using random-forest multiple imputation to address bias of self-reported anthropometric measures, hypertension and hypercholesterolemia in the Belgian health interview survey

Ingrid Pelgrims, Brecht Devleesschauwer, Stefanie Vandevijvere, Eva M. De Clercq, Stijn Vansteelandt, Vanessa Gorasso, Johan Van der Heyden

Open Access Research

A new cure model that corrects for increased risk of non-cancer death: analysis of reliability and robustness, and application to real-life data

Laura Botta, Juste Goungounga, Riccardo Capocaccia, Gaelle Romain, Marc Colonna, Gemma Gatta, Olayidé Boussari, Valérie Jooste

Open Access Research

The optimal pre-post allocation for randomized clinical trials

Shiyang Ma, Tianying Wang

Open Access Research

Subjective socioeconomic status: an alternative to objective socioeconomic status

Maryann Zhao, Chuan-Chin Huang, Milagros Mendoza, Ximena Tovar, Leonid Lecca, Megan Murray

Open Access Research

Estimating individualized treatment effects from randomized controlled trials: a simulation study to compare risk-based approaches

Alexandros Rekkas, Peter R. Rijnbeek, David M. Kent, Ewout W. Steyerberg, David van Klaveren

Open Access Research

Estimated Covid-19 burden in Spain: ARCH underreported non-stationary time series

David Moriña, Amanda Fernández-Fontelo, Alejandra Cabaña, Argimiro Arratia, Pedro Puig

Open Access Research

Modeling COVID-19 disease processes by remote elicitation of causal Bayesian networks from medical experts

Steven Mascaro, Yue Wu, Owen Woodberry, Erik P. Nyberg, Ross Pearson, Jessica A. Ramsay, Ariel O. Mace, David A. Foley, Thomas L. Snelling, Ann E. Nicholson, Alex Semprini, Andrew Martin, Andrew McLean-Tooke, Ben Marais, Benjamin Tang, Charlie McLeod, Christopher C. Blyth, Chris Lemoh, Claire Waddington, David Nolan, Edward Raby, Gladymar Perez, Guy Marks, Justin Denholm, Lisa Pilgram, Nicholas Anstey, Magdalena Plebanski, Mark Boyd, Meredith L. Borland, Michael Maze, Mina John, Paul Middleton, Simon Craig, Steve Y.C. Tong, Susan Benson, Toby Richards

Open Access Research

External validation of the American prediction model for incident type 2 diabetes in the Iranian population

Samaneh Asgari, Davood Khalili, Fereidoun Azizi, Farzad Hadaegh

Open Access Research

Recruitment to a trial of antipsychotic reduction: impact of an acceptability study

Georgina Ramsay, Zoë Haime, Nadia E Crellin, Jacki L Stansfeld, Stefan Priebe, Maria Long, Joanna Moncrieff

Open Access Research

Connecting a disconnected trial network with a new trial: optimizing the estimation of a comparative effect in a network meta-analysis

Lauren McKeen, Paul Morris, Chong Wang, Max D. Morris, Annette M. O’Connor

Open Access Research

Quality of systematic reviews on timing of complementary feeding for early childhood allergy prevention

Uwe Matterne, Melissa A. Theurich, Simone Pröbstl, Dawid Pieper, Jiancong Wang, Anna Xu, Christian Apfelbacher

Open Access Research

Design and analysis of outcomes following SARS-CoV-2 infection in veterans

Valerie A. Smith, Theodore S. Z. Berkowitz, Paul Hebert, Edwin S. Wong, Meike Niederhausen, John A. Pura, Kristin Berry, Pamela Green, Anna Korpak, Alexandra Fox, Aaron Baraff, Alex Hickok, Troy A Shahoumian, Amy S.B. Bohnert, Denise M. Hynes, Edward J. Boyko, George N. Ioannou, Theodore J. Iwashyna, C. Barrett Bowling, Ann M. O’Hare, Matthew L. Maciejewski

Open Access Research article

A new data driven method for summarising multiple cause of death data

Annette Dobson, Paul McElwee, Mohammad Reza Baneshi, James Eynstone-Hinkins, Lauren Moran, Michael Waller

Open Access Research

Development of a risk-tailored approach and dashboard for efficient management and monitoring of investigator-initiated trials

Katharina Klatte, Suvitha Subramaniam, Pascal Benkert, Alexandra Schulz, Klaus Ehrlich, Astrid Rösler, Mieke Deschodt, Thomas Fabbro, Christiane Pauli-Magnus, Matthias Briel

Open Access Research

Systematic comparison of approaches to analyze clustered competing risks data

Sabrina Schmitt, Anika Buchholz, Ann-Kathrin Ozga

Open Access Research

Piloting an automated clinical trial eligibility surveillance and provider alert system based on artificial intelligence and standard data models

Stéphane M. Meystre, Paul M. Heider, Andrew Cates, Grace Bastian, Tara Pittman, Stephanie Gentilin, Teresa J. Kelechi

Open Access Research

Simulating complex patient populations with hierarchical learning effects to support methods development for post-market surveillance

Sharon E. Davis, Henry Ssemaganda, Jejo D. Koola, Jialin Mao, Dax Westerman, Theodore Speroff, Usha S. Govindarajulu, Craig R. Ramsay, Art Sedrakyan, Lucila Ohno-Machado, Frederic S. Resnic, Michael E. Matheny

Open Access Research

Sample size calculations for indirect standardization

Yifei Wang, Philip Chu

Open Access Research

Data source profile reporting by studies that use routinely collected health data to explore the effects of drug treatment

Wen Wang, Mei Liu, Qiao He, Mingqi Wang, Jiayue Xu, Ling Li, Guowei Li, Lin He, Kang Zou, Xin Sun

Open Access Research

The relationship of publication language, study population, risk of bias, and treatment effects in acupuncture related systematic reviews: a meta-epidemiologic study

Jing Li, Xu Hui, Liang Yao, Anya Shi, Peijing Yan, Yuan Yao, Qi Wang, Yanfang Ma, Dang Wei, Lei Lan, Lingxiao Chen, Lijiao Yan, Fang Fang, Huijuan Li, Xiaowen Feng, Jingxi Wu, Yifan Qiao, Wenhao Zhang, Janne Esill, Chengdong Qiao, Kehu Yang

Open Access Research

Hierarchical network meta-analysis models for synthesis of evidence from randomised and non-randomised studies

Humaira Hussein, Keith R. Abrams, Laura J. Gray, Sumayya Anwer, Sofia Dias, Sylwia Bujkiewicz

Open Access Research

Asking informed consent may lead to significant participation bias and suboptimal cardiovascular risk management in learning healthcare systems

Anna G. M. Zondag, T. Katrien J. Groenhof, Rieke van der Graaf, Wouter W. van Solinge, Michiel L. Bots, Saskia Haitjema, Pim A. de Jong, Marianne C. Verhaar, Frank L. J. Visseren, Folkert W. Asselbergs, Niels P. van der Kaaij, Imo E. Hoefer, Gert J. de Borst, Ynte M. Ruigrok, Monika Hollander, A. Titia Lely, Mariëlle H. Emmelot-Vonk

Open Access Research

Association of ABO blood groups with venous thrombosis recurrence in middle-aged patients: insights from a weighted Cox analysis dedicated to ambispective design

Gaëlle Munsch, Louisa Goumidi, Astrid van Hylckama Vlieg, Manal Ibrahim-Kosta, Maria Bruzelius, Jean-François Deleuze, Frits R. Rosendaal, Hélène Jacqmin-Gadda, Pierre-Emmanuel Morange, David-Alexandre Trégouët

Open Access Research

Lived experience-centred word clouds may improve research uncertainty gathering in priority setting partnerships

Oliver D. Mowforth, Lance Burn, Danyal Z. Khan, Xiaoyu Yang, Sybil R. L. Stacpoole, Toto Gronlund, Lindsay Tetreault, Sukhvinder Kalsi-Ryan, Michelle L. Starkey, Iwan Sadler, Ellen Sarewitz, Delphine Houlton, Julia Carter, Paige Howard, Vafa Rahimi-Movaghar, James D. Guest, Bizhan Aarabi, Brian K. Kwon, Shekar N. Kurpad, James Harrop, Jefferson R. Wilson, Robert Grossman, Emma K. Smith, Angus McNair, Michael G. Fehlings, Mark R. N. Kotter, Benjamin M. Davies

Open Access Research

Hospital mortality prediction in traumatic injuries patients: comparing different SMOTE-based machine learning algorithms

Roghayyeh Hassanzadeh, Maryam Farhadian, Hassan Rafieemehr

Open Access Research

Comparison of correctly and incorrectly classified patients for in-hospital mortality prediction in the intensive care unit

Eline Stenwig, Giampiero Salvi, Pierluigi Salvo Rossi, Nils Kristian Skjærvold

Open Access Research

The Preventiometer - reliability of a cardiovascular multi-device measurement platform and its measurement agreement with a cohort study

Martin Junge, Markus Krüger, Dietlind L. Wahner-Roedler, Brent A. Bauer, Marcus Dörr, Martin Bahls, Jean-François Chenot, Reiner Biffar, Carsten O. Schmidt

Open Access Research

Researchers in rheumatology should avoid categorization of continuous predictor variables

Zubeyir Salis, Blanca Gallego, Amanda Sainsbury

Open Access Research

Reporting of flow diagrams in randomised controlled trials published in periodontology and implantology: a survey

Hanns-Gustav Julius Meyer, Nikolaos Pandis, Jadbinder Seehra, Clovis Mariano Faggion Jr

Open Access Research

Bayesian regularization to predict neuropsychiatric adverse events in smoking cessation with pharmacotherapy

Van Thi Thanh Truong, Charles Green, Claudia Pedroza, Lu-Yu Hwang, Suja S. Rajan, Robert Suchting, Paul Cinciripini, Rachel F. Tyndale, Caryn Lerman

Open Access Research

Utilization of five data mining algorithms combined with simplified preprocessing to establish reference intervals of thyroid-related hormones for non-elderly adults

Jian Zhong, Chaochao Ma, Li’an Hou, Yicong Yin, Fang Zhao, Yingying Hu, Ailing Song, Danchen Wang, Lei Li, Xinqi Cheng, Ling Qiu

Open Access Research

Interdisciplinary sport injury research and the integration of qualitative and quantitative data

S.E Hausken-Sutter, K Boije af Gennäs, A Schubring, S Grau, J Jungmalm, N Barker-Ruchti

Open Access Research

Quantitative bias analysis in practice: review of software for regression with unmeasured confounding

Emily Kawabata, Kate Tilling, Rolf H. H. Groenwold, Rachael A. Hughes

Open Access Research

Research recruitment and consent methods in a pandemic: a qualitative study of COVID-19 patients’ perspectives

Serena S Small, Erica Lau, Kassandra McFarlane, Patrick M Archambault, Holly Longstaff, Corinne M Hohl

Open Access Research

Exploring flexible polynomial regression as a method to align routine clinical outcomes with daily data capture through remote technologies

Nicole Filipow, Eleanor Main, Gizem Tanriver, Emma Raywood, Gwyneth Davies, Helen Douglas, Aidan Laverty, Sanja Stanojevic

Open Access Research

TRIPLE C reporting principles for case study evaluations of the role of context in complex interventions

Sara E. Shaw, Sara Paparini, Jamie Murdoch, Judith Green, Trisha Greenhalgh, Benjamin Hanckel, Hannah M. James, Mark Petticrew, Gary W. Wood, Chrysanthi Papoutsi

Open Access Research

The unrecognized role of fidelity in effectiveness-implementation hybrid trials: simulation study and guidance for implementation researchers

Diana Trutschel, Catherine Blatter, Michael Simon, Daniela Holle, Sven Reuther, Thekla Brunkert

Open Access Research

The Trial within Cohorts (TwiCs) study design in oncology: experience and methodological reflections

Rob Kessels, Anne M. May, Miriam Koopman, Kit C. B. Roes

Open Access Research

The estimation of long and short term survival time and associated factors of HIV patients using mixture cure rate models

Khadijeh Najafi Ghobadi, Ghodratollah Roshanaei, Jalal Poorolajal, Ebrahim Shakiba, Kaivan KHassi, Hossein Mahjub

Open Access Research

Reporting quality of randomized controlled trials of angina pectoris with integrated traditional Chinese and western medicine interventions: a cross-sectional study

Jiashuai Deng, Juan He, Juan Wang, Chung Wah Cheng, Yalin Jiao, Nana Wang, Ji Li, Ping Wang, Fei Han, Aiping Lyu, Zhaoxiang Bian, Xuan Zhang

Open Access Software

MSMpred: interactive modelling and prediction of individual evolution via multistate models

Leire Garmendia Bergés, Jordi Cortés Martínez, Guadalupe Gómez Melis

Open Access Software

MetaBayesDTA: codeless Bayesian meta-analysis of test accuracy, with or without a gold standard

Enzo Cerullo, Alex J. Sutton, Hayley E. Jones, Olivia Wu, Terry J. Quinn, Nicola J. Cooper

Open Access Research

Stratified split sampling of electronic health records

Tianyao Huo, Deborah H. Glueck, Elizabeth A. Shenkman, Keith E. Muller

Open Access Research

Development of the global inflammatory bowel disease visualization of epidemiology studies in the 21st century (GIVES-21)

Joyce W. Y. Mak, Yang Sun, Julajak Limsrivilai, Murdani Abdullah, Jamilya Kaibullayeva, Domingo Balderramo, Beatriz Iade Vergara, Mukesh Sharma Paudel, Rupa Banerjee, Ida Hilmi, Raja Affendi Raja Ali, Shu Chen Wei, Ka Kei Ng, Mansour Altuwaijri, Paul Kelly, Jesus K. Yamamoto-Furusho, Paulo Gustavo Kotze, Vineet Ahuja, Vui Heng Chong, Hang Viet Dao, Yvonne Abbey, Jessica Y. L. Ching, Agnes Ho, Alicia K. W. Chan, Charles N. Bernstein, Richard B. Gearry, Maria Abreu, David T. Rubin, Iris Dotan, Lindsay Hracs, Gilaad G. Kaplan, Siew C. Ng, Yan Tao, Jiamei Rong, Xiaocui Chen, Huixian Song, Chan Zhou, Yanju Mu, Wenjuan Wei, Xinyu Bai, Satimai Aniwan, Taya Kitiyakara, Kamin Harinwan, Chalermrat Bunchorntavakul, Karjpong Techathuvanan, Phuripong Kijdamrongthum, Tanita Suttichaimongkol, Panu Wetwittayakhlang, Marcellus Simadibrata, Ari Fahrial Syam, Deka Larasati, Tjahjadi Robert Tedjasaputra, Arlyando Hezron Saragih, Hendra Koncoro, Aizhan Kanabayeva, Nazira Kongyrbayeva, Assem Kurmangaliyeva, Yelena Laryushina, Toktarova Perizat, Ayupova Venera, Kaliyakparova Aidana, Ignacio Toscani, Luciana Nicoloff, Marie Howe, Xin Hui Khoo, Wong Choon Heng, Harjinder Singh, Andrew Chua, Khong Wai Hong, Meng-Tzu Weng, Wei-Chen Lin, Hsi-Chang Lee, Chun-Chao Chang, Chun-Chi Lin, Puo Hsien Le, Tien-Yu Huang, Cheuk-Kay Sun, Hsing-Jung Yeh, Yu Hon Ho, Bashaar AlIbrahim, Mohammed Alahmari, Phoebe Hodges, Bright Nsokolo, Yaw Awuku, Michael Li, Kam Hon Chan, Yip Wai Man, Thomas Wong Yun-Sze, Alex Fong

Open Access Research article

Robust estimation of dementia prevalence from two-phase surveys with non-responders via propensity score stratification

Chong Shen, Minyue Pei, Xiaoxiao Wang, Yiming Zhao, Luning Wang, Jiping Tan, Ke Deng, Nan Li

Open Access Research

Cluster analysis of angiotensin biomarkers to identify antihypertensive drug treatment in population studies

Maeregu Woldeyes Arisido, Luisa Foco, Robin Shoemaker, Roberto Melotti, Christian Delles, Martin Gögele, Stefano Barolo, Stephanie Baron, Michel Azizi, Anna F. Dominiczak, Maria-Christina Zennaro, Peter P. Pramstaller, Marko Poglitsch, Cristian Pattaro

Open Access Research

Predicting early postoperative PONV using multiple machine-learning- and deep-learning-algorithms

Cheng-Mao Zhou, Ying Wang, Qiong Xue, Jian-Jun Yang, Yu Zhu

Open Access Research

Does the feedback of blood results in observational studies influence response and consent? A randomised study of the Understanding Society Innovation Panel

Michaela Benzeval, Alexandria Andrayas, Jan Mazza, Tarek Al Baghal, Jonathan Burton, Thomas F. Crossley, Meena Kumari

Open Access Research

Examining differential success in recruitment using respondent driven sampling (RDS) in a multi-site study of gay, bisexual and other men who have sex with men

Jordan M. Sang, Bita Gholamian, Lu Wang, Justin Barath, Syed W. Noor, Nathan J. Lachowsky, Trevor A. Hart, Joseph Cox, Gilles Lambert, Daniel Grace, Shayna Skakoon-Sparling, Allan Lal, Abbie Parlette, Herak Apelian, Jody Jollimore, Robert S. Hogg, David M. Moore

Open Access Research

Measuring bereavement prevalence in a complex sampling survey: the 2019 Georgia Behavioral Risk Factor Surveillance System (BRFSS)

Changle Li, Toni P. Miles, Ye Shen, Rana Bayakly, Moses Ido, M. Mahmud Khan

Open Access Research

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Open Access Correction

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Open Access Correction

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Open Access Correction

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Open Access Matters Arising

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Open Access Research

Analysing cluster randomised controlled trials using GLMM, GEE1, GEE2, and QIF: results from four case studies

Bright C. Offorha, Stephen J. Walters, Richard M. Jacques

Open Access Research

Evolution of appraisal tool usage preferences in PROSPERO records: a study of non-Cochrane systematic reviews

J. Ruano, J. Gay-Mimbrera, M. Aguilar-Luque, F. Gómez-García, E. Parra-Peralbo, B. Isla-Tejera

Open Access Research

Developing non-response weights to account for attrition-related bias in a longitudinal pregnancy cohort

Tona M. Pitt, Erin Hetherington, Kamala Adhikari, Shainur Premji, Nicole Racine, Suzanne C. Tough, Sheila McDonald

Open Access Research

Quantifying and reducing inequity in average treatment effect estimation

Kenneth J. Nieser, Amy L. Cochran

Open Access Research

Better performance for right-skewed data using an alternative gamma model

Peter Veazie, Orna Intrator, Bruce Kinosian, Ciaran S. Phibbs

Open Access Research

A Bayesian approach to pilot-pivotal trials for bioequivalence assessment

Duo Lv, Michael J. Grayling, Xinyue Zhang, Qingwei Zhao, Haiyan Zheng

Open Access Research

Evaluation of ‘implications for research’ statements in systematic reviews of interventions in advanced cancer patients – a meta-research study

W. Siemens, G. Bantle, C. Ebner, A. Blümle, G. Becker, G. Schwarzer, J. J. Meerpohl