Peer Review History
| Original SubmissionJanuary 16, 2026 |
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-->PONE-D-26-02537-->-->Validating a novel driving simulation-based MWT against the standard MWT in an OSA-cohort challenged by CPAP-withdrawal (DS-MWT2) – Protocol for a monocentric, controlled, randomized, crossover trial-->-->PLOS One Dear Dr. Gambin, Thank you for submitting your manuscript to PLOS ONE. After careful consideration, we feel that it has merit but does not fully meet PLOS ONE’s publication criteria as it currently stands. Therefore, we invite you to submit a revised version of the manuscript that addresses the points raised during the review process. Please submit your revised manuscript by Apr 25 2026 11:59PM. If you will need more time than this to complete your revisions, please reply to this message or contact the journal office at plosone@plos.org. When you're ready to submit your revision, log on to https://www.editorialmanager.com/pone/ and select the 'Submissions Needing Revision' folder to locate your manuscript file. Please include the following items when submitting your revised manuscript:-->
If you would like to make changes to your financial disclosure, please include your updated statement in your cover letter. Guidelines for resubmitting your figure files are available below the reviewer comments at the end of this letter. If applicable, we recommend that you deposit your laboratory protocols in protocols.io to enhance the reproducibility of your results. Protocols.io assigns your protocol its own identifier (DOI) so that it can be cited independently in the future. For instructions see: https://journals.plos.org/plosone/s/submission-guidelines#loc-laboratory-protocols. Additionally, PLOS ONE offers an option for publishing peer-reviewed Lab Protocol articles, which describe protocols hosted on protocols.io. Read more information on sharing protocols at https://plos.org/protocols?utm_medium=editorial-email&utm_source=authorletters&utm_campaign=protocols. We look forward to receiving your revised manuscript. Kind regards, Christian Veauthier, M.D. Academic Editor PLOS One Journal Requirements: When submitting your revision, we need you to address these additional requirements. 1. Please ensure that your manuscript meets PLOS ONE's style requirements, including those for file naming. The PLOS ONE style templates can be found at https://journals.plos.org/plosone/s/file?id=wjVg/PLOSOne_formatting_sample_main_body.pdf and 2. Please note that PLOS One has specific guidelines on code sharing for submissions in which author-generated code underpins the findings in the manuscript. In these cases, we expect all author-generated code to be made available without restrictions upon publication of the work. Please review our guidelines at https://journals.plos.org/plosone/s/materials-and-software-sharing#loc-sharing-code and ensure that your code is shared in a way that follows best practice and facilitates reproducibility and reuse. 3. Thank you for stating the following in the Acknowledgments Section of your manuscript: “This study is an academic sponsor-initiated trial. Predominant funding is provided by internal funding (personnel, UZH). Partial funding is provided by a grant from the Emma-Louise-Kessler-Fonds, ELK to SK.” We note that you have provided funding information that is not currently declared in your Funding Statement. However, funding information should not appear in the Acknowledgments section or other areas of your manuscript. We will only publish funding information present in the Funding Statement section of the online submission form. Please remove any funding-related text from the manuscript and let us know how you would like to update your Funding Statement. Currently, your Funding Statement reads as follows: “Dr Stefan Lakämper received the grant from Emma-Louise-Kessler Fonds (Zurich, ZRH, CH), ID: DS-MWT2, URL: N/A The funding body did not contribute to the study design and will not be involved in its execution, data analysis, interpretation, or the decision to publish the results.” Please include your amended statements within your cover letter; we will change the online submission form on your behalf. 4. We note that the grant information you provided in the ‘Funding Information’ and ‘Financial Disclosure’ sections do not match. When you resubmit, please ensure that you provide the correct grant numbers for the awards you received for your study in the ‘Funding Information’ section. 5. Thank you for stating the following financial disclosure: “Dr Stefan Lakämper received the grant from Emma-Louise-Kessler Fonds (Zurich, ZRH, CH), ID: DS-MWT2, URL: N/A The funding body did not contribute to the study design and will not be involved in its execution, data analysis, interpretation, or the decision to publish the results.” Please state what role the funders took in the study. If the funders had no role, please state: "The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript." If this statement is not correct you must amend it as needed. Please include this amended Role of Funder statement in your cover letter; we will change the online submission form on your behalf. 6. Your ethics statement should only appear in the Methods section of your manuscript. If your ethics statement is written in any section besides the Methods, please delete it from any other section. 7. We note that the original protocol that you have uploaded as a Supporting Information file contains an institutional logo. As this logo is likely copyrighted, we ask that you please remove it from this file and upload an updated version upon resubmission. 8. If the reviewer comments include a recommendation to cite specific previously published works, please review and evaluate these publications to determine whether they are relevant and should be cited. There is no requirement to cite these works unless the editor has indicated otherwise. [Note: HTML markup is below. Please do not edit.] Reviewers' comments: Reviewer's Responses to Questions -->Comments to the Author 1. Does the manuscript provide a valid rationale for the proposed study, with clearly identified and justified research questions? The research question outlined is expected to address a valid academic problem or topic and contribute to the base of knowledge in the field.--> Reviewer #1: Partly Reviewer #2: Yes Reviewer #3: Partly ********** -->2. Is the protocol technically sound and planned in a manner that will lead to a meaningful outcome and allow testing the stated hypotheses? The manuscript should describe the methods in sufficient detail to prevent undisclosed flexibility in the experimental procedure or analysis pipeline, including sufficient outcome-neutral conditions (e.g. necessary controls, absence of floor or ceiling effects) to test the proposed hypotheses and a statistical power analysis where applicable. As there may be aspects of the methodology and analysis which can only be refined once the work is undertaken, authors should outline potential assumptions and explicitly describe what aspects of the proposed analyses, if any, are exploratory.--> Reviewer #1: Partly Reviewer #2: No Reviewer #3: Partly ********** -->3. Is the methodology feasible and described in sufficient detail to allow the work to be replicable? Descriptions of methods and materials in the protocol should be reported in sufficient detail for another researcher to reproduce all experiments and analyses. The protocol should describe the appropriate controls, sample size calculations, and replication needed to ensure that the data are robust and reproducible.--> Reviewer #1: Yes Reviewer #2: No Reviewer #3: No ********** -->4. Have the authors described where all data underlying the findings will be made available when the study is complete? The PLOS Data policy requires authors to make all data underlying the findings described in their manuscript fully available without restriction, with rare exception, at the time of publication. The data should be provided as part of the manuscript or its supporting information, or deposited to a public repository. For example, in addition to summary statistics, the data points behind means, medians and variance measures should be available. If there are restrictions on publicly sharing data—e.g. participant privacy or use of data from a third party—those must be specified.--> Reviewer #1: Yes Reviewer #2: Yes Reviewer #3: No ********** -->5. Is the manuscript presented in an intelligible fashion and written in standard English? PLOS ONE does not copyedit accepted manuscripts, so the language in submitted articles must be clear, correct, and unambiguous. Any typographical or grammatical errors should be corrected at revision, so please note any specific errors here.--> Reviewer #1: Yes Reviewer #2: Yes Reviewer #3: Yes ********** -->6. Review Comments to the Author Please use the space provided to explain your answers to the questions above and, if applicable, provide comments about issues authors must address before this protocol can be accepted for publication. You may also include additional comments for the author, including concerns about research or publication ethics. You may also provide optional suggestions and comments to authors that they might find helpful in planning their study. (Please upload your review as an attachment if it exceeds 20,000 characters)--> Reviewer #1: This is a very ambitious study with one primary outcome and several secondary outcomes comparing MWT sleep latencies with DS-MWT latencies unti sleep accidents. Some comments: The study goal is a good one. One of the major aims to develop a cost saving method is certainlay unrealistic. The MWT results are strongly motivation dependent and dependent on the lack of distraction for the probands. As such the DS-MWT is a contradiction to MWT protocol. Despite the extremely detailed protocol this remains the major flaw. line 233: Why perform home PSG several times? Is it to confirm sleep duration of 7 h or to confirm sleep quality? If it is for sleep duration actimetry would do as well and even assess sleep duration during the run-in time and througout all nights. Actimetry would also save costs. Line 240: what is the sitting position in the non DS-MWT? Semirecumbent or sitting in a kind of car seat? Line 278: it is difficult to understand how different latency definitions (MWT, vs DS-MWT) can be compared. It can be expected that those who stay on CPAP will not have necessarily have an “eyes closed“ event. Line 298: Which EEG-based markers of EDS are exactly meant? MWT results are highly dependent on motivation. Filling out all the tests before and after MWT, the montage, the verbal interventions and the known study goal, motivation could be strongly biased. Line 347: What does SA stand for? Lin 366: Are there any stops or cars passing by included in the driving simulation (trucks, traffic lights, speed changes…?) Reviewer #2: The investigators have already piloted a Driving Simulation–based MWT (DS-MWT), designed to evaluate sleepiness in an ecologically valid driving scenario. The present study aims to validate the novel DSMWT against the classical MWT in a functionally relevant cohort of patients with obstructive sleep apnea (OSA). The primary outcome measure of this trial will be the difference in mean latency between the classical MWT and the DS-MWT. The secondary hypotheses (objectives) are noted in the synopsis of the supplemental protocol and elsewhere. The elements of the planned protocol are in place. Further clarification is needed as will be noted below. My focus is on the statistical design and analysis of the project. The schematic outline in the protocol plan looks reasonable as do other elements. Also, see Figures 1 and 2 in the manuscript and Table 1 and 2 in the supplementary protocol. 1. Define clearly in this context the terms ‘latency’ and ‘causality assessments’. Be careful of the term ‘causality’. The more appropriate term may be ‘association’ in this statistical context. Defend the use of, ‘causality’. 2. The analysis section in the protocol lacks detail. Be more specific in section 5.1.2 stating the exact analysis for targeted objectives (with dependent variables and predictors including possible interactions). 3. In the section 5.1.2 what exactly is ‘logistic regression of driving parameters’? Please expand. 4. Explain the rationale for the 2 to 1 intervention to control imbalance. 5. In the sample size section, 5.1.1 of the protocol and text, please give the numerical value of the ICC and how was it derived? 6. The data management section is not complete. What are the data quality control or validation procedures even though they may be referenced? Please do a thorough edit of the manuscript to be sure that other detail is included. The document should be self contained. Reviewer #3: The authors present a protocol for a study which is, according to the title of the submitted paper, intended to validate a novel version of the MWT against the standard MWT. The primary objective named by the authors is "to determine whether there is a statistically significant difference in latency between the classical MWT and the DS-MWT". This is unclear. If there is a significant difference, is the new version with the driving simulation not valid? If there is no difference, why should anyone use the new version, which needs much more effort and instrumentation? As a rationale for their modification of the MWT with the inclusion of a driving simulator they argue that the standard MWT “may not accurately reflect real-world driving risks”, and their variation of the MWT might introduce “a realistic, supposedly more ecologically valid alternative to standard sleepiness assessment tools” and “may enhance clinical decision-making regarding fitness to drive (FTD)”. However, the standard MWT has never been adequately validated as a tool to assess FTD, and a critical MWT score which indicates “real-world driving risks” is not established. A validation with respect to FTD or similar safety aspects would need to involve an established gold standard, which is obviously hard to come by. A surrogate parameter, which might provide face validity, but not truly established ecological validity, might be the number of “sleep accidents” as defined by the authors, which, however, seem to occur with this MWT variant in much higher numbers than would be expected in real life (see citation 5). In summary, it is not warranted to call this study a “validation”. Further Issues The method to induce sleepiness applied in the study is not the same as the one used in the cited papers (cf. cit. 23), and the mentioned paper names a number of factors which influence the degree of change in subjective (not objective) sleepiness in their population. This should be noted, as it may influence the necessary sample size. As the authors state, "it remains unclear whether EDS itself is consistently and measurably reactivated in this model, as no systematic data on its recurrence are currently available". Therefore, at the very least, the effect of CPAP withdrawal on subjective sleepiness in the patient population should be controlled (e.g., by appropriately modified ESS). The protocol lacks the assessment of basic vital signs (e.g., weight, height, blood pressure, heart rate) at trial start and after intervention, the latter for safety reasons and to control for effects on the bio-samples. It is not specified how "sleep quality" and its night-to-night variability are to be assessed in the PSG recordings. The protocol names some inclusion and exclusion criteria. However, in the following text, it is mentioned that the participants in the patients are referred from a partnering institution, and it is not clear how the referred patients are pre-selected by that institution. The control group, which is relatively small, and the lack of any matching criteria reduces comparability with the clinical sample, even with statistical adaptation methods. The use of medications with potential influence on sleepiness, and wake promoting agents (such as caffeine or smoking) in the participants is apparently not controlled or the control of these factors is not mentioned. The large number of secondary outcomes also constitutes an issue. In the paper, many of these outcomes are listed in a rather vague language, and no rationale is given why just these measures are selected, and how they are related to the basic question of the study, i.e., assessment of FTD. A procedure to make original data available (with proper respect to the protection of patient identity) should be included in the paper. ********** -->7. PLOS authors have the option to publish the peer review history of their article (what does this mean?). If published, this will include your full peer review and any attached files. If you choose “no”, your identity will remain anonymous but your review may still be made public. Do you want your identity to be public for this peer review? For information about this choice, including consent withdrawal, please see our Privacy Policy.--> Reviewer #1: Yes: Geert Mayer Reviewer #2: No Reviewer #3: No ********** [NOTE: If reviewer comments were submitted as an attachment file, they will be attached to this email and accessible via the submission site. Please log into your account, locate the manuscript record, and check for the action link "View Attachments". If this link does not appear, there are no attachment files.] To ensure your figures meet our technical requirements, please review our figure guidelines: https://journals.plos.org/plosone/s/figures You may also use PLOS’s free figure tool, NAAS, to help you prepare publication quality figures: https://journals.plos.org/plosone/s/figures#loc-tools-for-figure-preparation. NAAS will assess whether your figures meet our technical requirements by comparing each figure against our figure specifications. |
| Revision 1 |
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Validating a novel driving simulation-based MWT against the standard MWT in an OSA-cohort challenged by CPAP-withdrawal (DS-MWT2) – Protocol for a monocentric, controlled, randomized, crossover trial PONE-D-26-02537R1 Dear Dr. Gambin, We’re pleased to inform you that your manuscript has been judged scientifically suitable for publication and will be formally accepted for publication once it meets all outstanding technical requirements. Within one week, you’ll receive an e-mail detailing the required amendments. When these have been addressed, you’ll receive a formal acceptance letter and your manuscript will be scheduled for publication. An invoice will be generated when your article is formally accepted. Please note, if your institution has a publishing partnership with PLOS and your article meets the relevant criteria, all or part of your publication costs will be covered. Please make sure your user information is up-to-date by logging into Editorial Manager at Editorial Manager® and clicking the ‘Update My Information' link at the top of the page. For questions related to billing, please contact billing support. If your institution or institutions have a press office, please notify them about your upcoming paper to help maximize its impact. If they’ll be preparing press materials, please inform our press team as soon as possible -- no later than 48 hours after receiving the formal acceptance. Your manuscript will remain under strict press embargo until 2 pm Eastern Time on the date of publication. For more information, please contact onepress@plos.org. Kind regards, Christian Veauthier, M.D. Academic Editor PLOS One Additional Editor Comments (optional): Reviewers' comments: Reviewer's Responses to Questions -->Comments to the Author 1. Does the manuscript provide a valid rationale for the proposed study, with clearly identified and justified research questions? The research question outlined is expected to address a valid academic problem or topic and contribute to the base of knowledge in the field.--> Reviewer #2: Yes ********** -->2. Is the protocol technically sound and planned in a manner that will lead to a meaningful outcome and allow testing the stated hypotheses? The manuscript should describe the methods in sufficient detail to prevent undisclosed flexibility in the experimental procedure or analysis pipeline, including sufficient outcome-neutral conditions (e.g. necessary controls, absence of floor or ceiling effects) to test the proposed hypotheses and a statistical power analysis where applicable. As there may be aspects of the methodology and analysis which can only be refined once the work is undertaken, authors should outline potential assumptions and explicitly describe what aspects of the proposed analyses, if any, are exploratory.--> Reviewer #2: Yes ********** -->3. Is the methodology feasible and described in sufficient detail to allow the work to be replicable? Descriptions of methods and materials in the protocol should be reported in sufficient detail for another researcher to reproduce all experiments and analyses. The protocol should describe the appropriate controls, sample size calculations, and replication needed to ensure that the data are robust and reproducible.--> Reviewer #2: Yes ********** -->4. Have the authors described where all data underlying the findings will be made available when the study is complete? The PLOS Data policy requires authors to make all data underlying the findings described in their manuscript fully available without restriction, with rare exception, at the time of publication. The data should be provided as part of the manuscript or its supporting information, or deposited to a public repository. For example, in addition to summary statistics, the data points behind means, medians and variance measures should be available. If there are restrictions on publicly sharing data—e.g. participant privacy or use of data from a third party—those must be specified.--> Reviewer #2: Yes ********** -->5. Is the manuscript presented in an intelligible fashion and written in standard English? PLOS ONE does not copyedit accepted manuscripts, so the language in submitted articles must be clear, correct, and unambiguous. Any typographical or grammatical errors should be corrected at revision, so please note any specific errors here.--> Reviewer #2: Yes ********** -->6. Review Comments to the Author Please use the space provided to explain your answers to the questions above and, if applicable, provide comments about issues authors must address before this protocol can be accepted for publication. You may also include additional comments for the author, including concerns about research or publication ethics. You may also provide optional suggestions and comments to authors that they might find helpful in planning their study. (Please upload your review as an attachment if it exceeds 20,000 characters)--> Reviewer #2: All comments have been addressed or clarified. The revisions appear reasonable. The analysis section is much improved. ********** -->7. PLOS authors have the option to publish the peer review history of their article (what does this mean?). If published, this will include your full peer review and any attached files. If you choose “no”, your identity will remain anonymous but your review may still be made public. Do you want your identity to be public for this peer review? For information about this choice, including consent withdrawal, please see our Privacy Policy.--> Reviewer #2: No ********** |
| Formally Accepted |
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PONE-D-26-02537R1 PLOS One Dear Dr. Gambin, I'm pleased to inform you that your manuscript has been deemed suitable for publication in PLOS One. Congratulations! Your manuscript is now being handed over to our production team. At this stage, our production department will prepare your paper for publication. This includes ensuring the following: * All references, tables, and figures are properly cited * All relevant supporting information is included in the manuscript submission, * There are no issues that prevent the paper from being properly typeset You will receive further instructions from the production team, including instructions on how to review your proof when it is ready. Please keep in mind that we are working through a large volume of accepted articles, so please give us a few days to review your paper and let you know the next and final steps. Lastly, if your institution or institutions have a press office, please let them know about your upcoming paper now to help maximize its impact. If they'll be preparing press materials, please inform our press team within the next 48 hours. Your manuscript will remain under strict press embargo until 2 pm Eastern Time on the date of publication. For more information, please contact onepress@plos.org. You will receive an invoice from PLOS for your publication fee after your manuscript has reached the completed accept phase. If you receive an email requesting payment before acceptance or for any other service, this may be a phishing scheme. Learn how to identify phishing emails and protect your accounts at https://explore.plos.org/phishing. If we can help with anything else, please email us at customercare@plos.org. Thank you for submitting your work to PLOS ONE and supporting open access. Kind regards, PLOS ONE Editorial Office Staff on behalf of Dr. Christian Veauthier Academic Editor PLOS One |
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