The authors reply: Letter on: “ Sarcopenia and its association with falls and fracturesin older adults: A systematic review andmeta‐analysis” by Zhang et al. by Suey S.Y. Yeung, Martijn W. Heymans, Andrea B. Maier

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Methods for significance testing of categorical covariates in logistic regression models after multiple imputation: power and applicability analysis by Iris Eekhout, Mark A. van de Wiel, Martijn W. Heymans

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Salvage surgery for recurrent or persistent tumour after radical (chemo)radiotherapy for locally advanced non-small cell lung cancer: a systematic review by Chris Dickhoff, Rene H. J. Otten, Martijn W. Heymans, Max Dahele

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Comparison of logistic-regression based methods for simple mediation analysis with a dichotomous outcome variable by Judith J. M. Rijnhart, Jos W. R. Twisk, Iris Eekhout, Martijn W. Heymans

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Pain trajectories and possible predictors of a favourable course of low back pain in patients consulting musculoskeletal physicians in The Netherlands by Wouter Schuller, Raymond W. Ostelo, Daphne C. Rohrich, Martijn W. Heymans, Henrica C. W. de Vet

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Prediction models to identify workers at risk of sick leave due to low-back pain in the Dutch construction industry by Lisa C Bosman, Lyan Dijkstra, Catelijne I Joling, Martijn W Heymans, Jos WR Twisk, Corné AM Roelen

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Noncollapsibility and its role in quantifying confounding bias in logistic regression by Noah A. Schuster, Jos W. R. Twisk, Gerben ter Riet, Martijn W. Heymans, Judith J. M. Rijnhart

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Socio-demographic and lifestyle-related characteristics associated with self-reported any, daily and occasional smoking during pregnancy. by Ruth Baron, Judith Manniën, Ank de Jonge, Martijn W Heymans, Trudy Klomp, Eileen K Hutton, Johannes Brug

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External validation and updating of prognostic models for predicting recovery of disability in people with (sub)acute neck pain was successful: broad external validation in a new p... by Roel W Wingbermühle, Alessandro Chiarotto, Emiel van Trijffel, Martijn S Stenneberg, Ronald Kan, Bart W Koes, Martijn W Heymans

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Salvage surgery for local recurrence after stereotactic body radiotherapy for early stage non-small cell lung cancer: a systematic review by Chris Dickhoff, Pedro M. Rodriguez Schaap, Rene H. J. Otten, Martijn W. Heymans, David J. Heineman, Max Dahele

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Re: Amelsvoort et al. “Approaches for predicting long-term sickness absence” by Lianne S Schouten, Catelijne I Joling, Joost WJ van der Gulden, Martijn W Heymans, Ute Bültmann, Corné AM Roelen

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Misspecification of confounder-exposure and confounder-outcome associations leads to bias in effect estimates by Noah A. Schuster, Judith J. M. Rijnhart, Lisa C. Bosman, Jos W. R. Twisk, Thomas Klausch, Martijn W. Heymans

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Predicting long-term sickness absence among retail workers after four days of sick-listing by Corné AM Roelen, Erwin M Speklé, Birgit I Lissenberg-Witte, Martijn W Heymans, Willem van Rhenen, Frederieke G Schaafsma

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Comparison of methods for the analysis of relatively simple mediation models by Judith J.M. Rijnhart, Jos W.R. Twisk, Mai J.M. Chinapaw, Michiel R. de Boer, Martijn W. Heymans

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International monitoring of capacity of treatment systems for alcohol and drug use disorders: Methodology of the Service Capacity Index for Substance Use Disorders by Dzmitry Krupchanka, Tomas Formanek, Kevin Shield, Jürgen Rehm, Martijn W. Heymans, Alexandra Fleischmann, Louisa Degenhardt, Tarek Gawad, Vladimir Poznyak

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External validation: a simulation study to compare cross-validation versus holdout or external testing to assess the performance of clinical prediction models using PET data from D... by Jakoba J. Eertink, Martijn W. Heymans, Gerben J. C. Zwezerijnen, Josée M. Zijlstra, Henrica C. W. de Vet, Ronald Boellaard

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Systematic review on the comparative effectiveness of foot orthoses in patients with rheumatoid arthritis by Marloes Tenten-Diepenmaat, Joost Dekker, Martijn W. Heymans, Leo D. Roorda, Thea P. M. Vliet Vlieland, Marike van der Leeden

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Work ability as prognostic risk marker of disability pension: single-item work ability score versus multi-item work ability index by Corné AM Roelen, Willem van Rhenen, Johan W Groothoff, Jac JL van der Klink, Jos WR Twisk, Martijn W Heymans

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Economic evaluation of a participatory return-to-work intervention for temporary agency and unemployed workers sick-listed due to musculoskeletal disorders by Sylvia J Vermeulen, Martijn W Heymans, Johannes R Anema, Antonius JM Schellart, Willem van Mechelen, Allard J van der Beek

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Improved intention, self-efficacy and social influence in the workspace may help low vision service workers to discuss depression and anxiety with visually impaired and blind adult... by Edine P. J. van Munster, Hilde P. A. van der Aa, Peter Verstraten, Martijn W. Heymans, Ruth M. A. van Nispen

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