Peer Review History
Original SubmissionNovember 17, 2022 |
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PONE-D-22-31704 COVID-19 patient profiles over four waves in Barcelona metropolitan area: A clustering approach PLOS ONE Dear Dr. Fernández, 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 28 2023 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: A rebuttal letter that responds to each point raised by the academic editor and reviewer(s). You should upload this letter as a separate file labeled 'Response to Reviewers'. A marked-up copy of your manuscript that highlights changes made to the original version. You should upload this as a separate file labeled 'Revised Manuscript with Track Changes'. An unmarked version of your revised paper without tracked changes. You should upload this as a separate file labeled '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. 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Please amend your current ethics statement to address the following concerns: a) Did participants provide their written or verbal informed consent to participate in this study? b) If consent was verbal, please explain i) why written consent was not obtained, ii) how you documented participant consent, and iii) whether the ethics committees/IRB approved this consent procedure. 3. Please amend your current ethics statement to include the full name of all ethics committees/institutional review boards that approved your specific study. 4. Thank you for stating the following in the Acknowledgments Section of your manuscript: DF, NP, and GM have been supported by l’Agència de Gestió d'Ajuts Universitaris i de Recerca (AGAUR) de la Generalitat de Catalunya (Spain) [2020PANDE00148] (https://agaur.gencat.cat/en/inici/index.html). DF and NP have been supported by the Ministerio de Ciencia e Innovación (Spain) [PID2019-104830RB-I00/ DOI (AEI): 10.13039/501100011033] (https://www.aei.gob.es/en/announcements/announcements-finder/proyectos-idi-2019-modalidades-retos-investigacion-generacion). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. 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: DF, NP, and GM have been supported by l’Agència de Gestió d'Ajuts Universitaris i de Recerca (AGAUR) de la Generalitat de Catalunya (Spain) [2020PANDE00148] (https://agaur.gencat.cat/en/inici/index.html). DF and NP have been supported by the Ministerio de Ciencia e Innovación (Spain) [PID2019-104830RB-I00/ DOI (AEI): 10.13039/501100011033] (https://www.aei.gob.es/en/announcements/announcements-finder/proyectos-idi-2019-modalidades-retos-investigacion-generacion). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Please include your amended statements within your cover letter; we will change the online submission form on your behalf. 5. We note that you have indicated that data from this study are available upon request. PLOS only allows data to be available upon request if there are legal or ethical restrictions on sharing data publicly. For more information on unacceptable data access restrictions, please see http://journals.plos.org/plosone/s/data-availability#loc-unacceptable-data-access-restrictions. 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One of the noted authors is a group or consortium DIVINE project. In addition to naming the author group, please list the individual authors and affiliations within this group in the acknowledgments section of your manuscript. Please also indicate clearly a lead author for this group along with a contact email address.’ 7. 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 move it to the Methods section and delete it from any other section. Please ensure that your ethics statement is included in your manuscript, as the ethics statement entered into the online submission form will not be published alongside your manuscript. Additional Editor Comments: Thank you for submitting your work to PLOS One. Based on feedback from the reviewers, and careful review of your submission, I invite you to revise your manuscript and provide point by point rebuttal to comments provided by the reviewer/s. I look forward to reading revised version of your submission. [Note: HTML markup is below. Please do not edit.] Reviewers' comments: Reviewer's Responses to Questions Comments to the Author 1. Is the manuscript technically sound, and do the data support the conclusions? The manuscript must describe a technically sound piece of scientific research with data that supports the conclusions. Experiments must have been conducted rigorously, with appropriate controls, replication, and sample sizes. The conclusions must be drawn appropriately based on the data presented. Reviewer #1: Partly Reviewer #2: Yes Reviewer #3: Yes ********** 2. Has the statistical analysis been performed appropriately and rigorously? Reviewer #1: Yes Reviewer #2: Yes Reviewer #3: Yes ********** 3. Have the authors made all data underlying the findings in their manuscript fully available? The PLOS Data policy requires authors to make all data underlying the findings described in their manuscript fully available without restriction, with rare exception (please refer to the Data Availability Statement in the manuscript PDF file). 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: Yes ********** 4. 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: No Reviewer #2: Yes Reviewer #3: Yes ********** 5. Review Comments to the Author Please use the space provided to explain your answers to the questions above. You may also include additional comments for the author, including concerns about dual publication, research ethics, or publication ethics. (Please upload your review as an attachment if it exceeds 20,000 characters) Reviewer #1: In this article, the Authors report the results of a prospective multicentre cohort study based on patient clusterization during four COVID-19 waves within the southern Barcelona metropolitan area. Their aim is to identify different patient profiles and to relate them to the severity degrees of the outcomes. The study was conducted appropriately, with a methodology employing a clustering classification based on multistep procedure. However, description of the steps undertaken was lacking, with grammatical and syntax errors that made the reading difficult to follow. Furthermore, we recommend extensive English language editing for the whole document. In the list below, Authors can find a number of points that specifically need to be addressed in order to improve the quality of the article. Abstract � Objectives: syntax and meaning of the sentence are not clear. � Methods: the phrase “level of obesity” is not exact. In both table 1 and 2 it is only specified the number of patients with a BMI score above 30 and not the level of obesity. Use “number of obese patients”, instead. Introduction � In the first sentence it is better to use “a.k.a” in the extended form “also known as”. Methods a) Setting and participants: o Was the informed consent necessary? Did the Authors acquired it? o The sentence ”All patients were adults (>18 years old) and admitted with PCR-proven SARS-CoV-2 infection for at least 48 hours” is not clear: did the PCR test has to become positive in the 48 hours before or following admission? b) Analytic process: 1. Collecting and formatting of study data: in the second sentence it is not specified who did in particular fill the questionnaires. Did the Authors or other physicians do it? 2. Interpretation of cluster profiles: − In the sentence “…we shared our analytic results with the physicians to define…” which are the physicians the Authors are referring to? How were the distinct profiles defined? Was there consensus between the MDs in the definitions? − In the last sentence it is not clear what the Authors are trying to say. Results � KAMILA Results: o The sentence “Generally speaking, the more determined variables for the three first waves to find the clusters were patient’s age and level of obesity, the number of comorbidities, oxygen support requirement, and various severity scores as SaFi illness, which is defined as the ratio between the oxygen saturation and the fraction of inspired oxygen” is ambiguous, so it is necessary to review it. o In the same sentence as above, it’s more appropriate the use of “i.e” instead of “a.k.a”. � Patient Profiles: o When referring to age or ages use “lower” instead of “smaller”. o In the last sentence of the first paragraph “degrees of obesity” is not correct (see Abstract in this review). o The 2nd and 3rd paragraph need a significant language and syntax editing. o In the 4th paragraph the sentence “Between the two non-vaccinated….combined with larger ages” has multiple issues: � Is better to use “less-vaccinated” than “non-vaccinated” because in cluster 1 and 2 the vaccination rate is low but not null. � The full regimen vaccination rate is actually lower in the first cluster (15.3%) and not in the 2nd (16.6 %). � “Larger ages” is not correct, better to use “a wider age’s range”. o In the sentence “The elderly patients (cluster 3)….the survivors of previous waves.” it’s not clear how the Authors draw these conclusions. Have only the patients in Cluster 3 survived the previous COVID-19 waves? Did these patients catch SARS-Cov-2 during previous waves? o eTable 3 should be added to the main article because it is useful to better understand the different outcomes in the different clusters. Discussion � The meaning of the last sentence of the 1st paragraph, as highlighted before in the results, is not clear. Does it mean that the patients in the other clusters didn’t survive the first three waves? � In the 2nd paragraph the sentence “The reason is that….those outcomes of COVID-19” is not clear. � In the 2nd sentence of the 3rd paragraph the sentence “were evidenced that did not work” is not correct Conclusions � The conclusion is brief. It would be nice if the Authors deepened their view about how the clustering approach could help the physicians in a practical setting. For instance, it would be interesting to have some actual examples on how the patient’s management should be differentiated according to the different clustering at hospital admission. Reviewer #2: Dear Author/s Greetings The article does not present a scientific novelty. It seems only a brief assessment of the Covid 19 waves. Therefore, it is not suitable for publication in the journal. Best regards Reviewer #3: Excellent work in collecting and analysing the data. Consider adding a comparison to other large metropolitan areas in Spain or Europe Please add a better quality image of Figure 1. Bar plots of the % of the outcome ********** 6. 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: Andrea Orsi Reviewer #2: Yes: Yavuz AYAR Reviewer #3: Yes: Mahmoud Elfiky, MD, GCSRT ********** [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.] While revising your submission, please upload your figure files to the Preflight Analysis and Conversion Engine (PACE) digital diagnostic tool, https://pacev2.apexcovantage.com/. PACE helps ensure that figures meet PLOS requirements. To use PACE, you must first register as a user. Registration is free. Then, login and navigate to the UPLOAD tab, where you will find detailed instructions on how to use the tool. 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Revision 1 |
PONE-D-22-31704R1COVID-19 patient profiles over four waves in Barcelona metropolitan area: A clustering approachPLOS ONE Dear Dr. Fernández, 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. Firstly, apologies for the long wait for this decision. We received comments from a statistical reviewer, who has requested more information on the KAMILA approach. I think the reviewer has provided a balanced argument, where they suggest that some more detail is provided on how this clustering method works, without having to recap everything, and also asks you to provide some justification on why this methodology was chosen. I hope that you find this feedback useful, and we look forward to receiving your revised manuscript. Please submit your revised manuscript by Apr 22 2024 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 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, Hanna Landenmark Staff Editor PLOS ONE Journal Requirements: Please review your reference list to ensure that it is complete and correct. If you have cited papers that have been retracted, please include the rationale for doing so in the manuscript text, or remove these references and replace them with relevant current references. Any changes to the reference list should be mentioned in the rebuttal letter that accompanies your revised manuscript. If you need to cite a retracted article, indicate the article’s retracted status in the References list and also include a citation and full reference for the retraction notice. [Note: HTML markup is below. Please do not edit.] Reviewers' comments: Reviewer's Responses to Questions Comments to the Author 1. If the authors have adequately addressed your comments raised in a previous round of review and you feel that this manuscript is now acceptable for publication, you may indicate that here to bypass the “Comments to the Author” section, enter your conflict of interest statement in the “Confidential to Editor” section, and submit your "Accept" recommendation. Reviewer #3: All comments have been addressed Reviewer #4: (No Response) ********** 2. Is the manuscript technically sound, and do the data support the conclusions? The manuscript must describe a technically sound piece of scientific research with data that supports the conclusions. Experiments must have been conducted rigorously, with appropriate controls, replication, and sample sizes. The conclusions must be drawn appropriately based on the data presented. Reviewer #3: Yes Reviewer #4: Yes ********** 3. Has the statistical analysis been performed appropriately and rigorously? Reviewer #3: Yes Reviewer #4: I Don't Know ********** 4. Have the authors made all data underlying the findings in their manuscript fully available? The PLOS Data policy requires authors to make all data underlying the findings described in their manuscript fully available without restriction, with rare exception (please refer to the Data Availability Statement in the manuscript PDF file). 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 #3: Yes Reviewer #4: 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 #3: Yes Reviewer #4: Yes ********** 6. Review Comments to the Author Please use the space provided to explain your answers to the questions above. You may also include additional comments for the author, including concerns about dual publication, research ethics, or publication ethics. (Please upload your review as an attachment if it exceeds 20,000 characters) Reviewer #3: Congratulations on an excellent work well done. This paper will serve as a guideline for many epidemiologists, not only in Europe but Worldwide Reviewer #4: Major Revision This is a very complex paper describing the application of clustering techniques to help identify groups of patients with COVID-19 who essentially then have differing risks of, for example, death from their disease. Clustering techniques essentially take variables, ranging from the patient characteristics at presentation, to clinical and laboratory measures. In this study these appear to concern 292 such measures which are then reduced by some means (not fully explained) to 36. In brief, these remaining variables are then exposed to a so-called KAMILA clustering technique which appears (see Table 1 for example) to be reduced to 20 for the Wave 1 group of COVID patients. Sadly, no explanation of how KAMILA works is provided although this is perhaps not so surprising as the reference to Foss and Markatou (2018) describing the technique comprises 43 pages of complex text. Nevertheless, without some explanation of how KAMILA works the reader is left facing a totally ‘black box’ (a total mystery) procedure. I presume KAMILA somehow reduces the number of variables (here from 36 to 20) and then creates several 20-dimensional clouds of these variables which if distinct (although perhaps overlapping) are then identified as the Clusters. However, whatever this process, the two groups (Wave 1: Cluster 1 & Cluster 2) identified for Table 3 appear to distinguish them by having higher In-hospital mortality, need for ICU assistance, and for Invasive mechanical assistance. Similar findings are reported for Waves 2, 3 and 4. Personally, I am not very comfortable with the complex processes involved here, but more importantly any non (cluster) technical reader will be mystified by the presentation. I note that the authors all appear to be statisticians (as I am) but I strongly feel that the paper could be much improved with a simple review of the clustering process and some clinical input to reinforce the value of this approach. Incidentally, this paper without Page and Line numbers included, made reviewing very difficult. ********** 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 #3: Yes: Mahmoud Elfiky Reviewer #4: 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.] While revising your submission, please upload your figure files to the Preflight Analysis and Conversion Engine (PACE) digital diagnostic tool, https://pacev2.apexcovantage.com/. PACE helps ensure that figures meet PLOS requirements. To use PACE, you must first register as a user. Registration is free. Then, login and navigate to the UPLOAD tab, where you will find detailed instructions on how to use the tool. If you encounter any issues or have any questions when using PACE, please email PLOS at figures@plos.org. Please note that Supporting Information files do not need this step. |
Revision 2 |
COVID-19 patient profiles over four waves in Barcelona metropolitan area: A clustering approach PONE-D-22-31704R2 Dear Dr. Fernandez, 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. If you have any questions relating to publication charges, please contact our Author Billing department directly at authorbilling@plos.org. 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, Dong Wook Chang Academic Editor PLOS ONE Additional Editor Comments (optional): Thank you for your revisions and additions to this very interesting manuscript. It is technically very complex, and I believe the additional information KAMILA and the tables have significantly improved the readability of this work. Reviewers' comments: Reviewer's Responses to Questions Comments to the Author 1. If the authors have adequately addressed your comments raised in a previous round of review and you feel that this manuscript is now acceptable for publication, you may indicate that here to bypass the “Comments to the Author” section, enter your conflict of interest statement in the “Confidential to Editor” section, and submit your "Accept" recommendation. Reviewer #3: All comments have been addressed Reviewer #4: All comments have been addressed ********** 2. Is the manuscript technically sound, and do the data support the conclusions? The manuscript must describe a technically sound piece of scientific research with data that supports the conclusions. Experiments must have been conducted rigorously, with appropriate controls, replication, and sample sizes. The conclusions must be drawn appropriately based on the data presented. Reviewer #3: Yes Reviewer #4: Yes ********** 3. Has the statistical analysis been performed appropriately and rigorously? Reviewer #3: Yes Reviewer #4: Yes ********** 4. Have the authors made all data underlying the findings in their manuscript fully available? The PLOS Data policy requires authors to make all data underlying the findings described in their manuscript fully available without restriction, with rare exception (please refer to the Data Availability Statement in the manuscript PDF file). 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 #3: Yes Reviewer #4: 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 #3: Yes Reviewer #4: Yes ********** 6. Review Comments to the Author Please use the space provided to explain your answers to the questions above. You may also include additional comments for the author, including concerns about dual publication, research ethics, or publication ethics. (Please upload your review as an attachment if it exceeds 20,000 characters) Reviewer #3: Excellent work as stated before. I praise your efforts in detailing your Statistical Analysis eloquently and carefully Reviewer #4: Accept The authors have made substantial changes to the paper which, I hope, will make it easier for a clinical reader to digest. I have no further comments. ********** 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 #3: Yes: Mahmoud Elfiky Reviewer #4: No ********** |
Formally Accepted |
PONE-D-22-31704R2 PLOS ONE Dear Dr. Fernández, 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 If revisions are needed, the production department will contact you directly to resolve them. If no revisions are needed, you will receive an email when the publication date has been set. At this time, we do not offer pre-publication proofs to authors during production of the accepted work. Please keep in mind that we are working through a large volume of accepted articles, so please give us a few weeks 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. 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. Dong Wook Chang Academic Editor PLOS ONE |
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