Peer Review History

Original SubmissionNovember 6, 2023
Decision Letter - Lalit Gupta, Editor

PONE-D-23-35478The impact of biological sex in peripheral nerve blockade: A prospective pharmacodynamic, pharmacokinetic and morphometric study in volunteersPLOS ONE

Dear Dr. Zadrazil,

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.

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The study involved volunteers in a clinical trial examining the influence of biological sex on peripheral nerve blockade's pharmacodynamic, pharmacokinetic, and morphometric characteristics. Minor revisions are suggested, including the replacement of "P<0.05" with significance levels in power calculations, specifying statistical methods for p-value estimation in the abstract, indicating the statistical testing method achieving 80% power, correcting a grammatical error related to Fisher's exact, stating the underlying covariance structure in linear mixed effects models, providing percentages for the left or right side in Table 1's "side" column, referencing the mathematical method for calculating AUC in line 219, adding sample sizes to the header row in Table 3, and reporting any adverse events during the study.

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We look forward to receiving your revised manuscript.

Kind regards,

Lalit Gupta

Academic Editor

PLOS ONE

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Additional Editor Comments:

The study involved volunteers in a clinical trial examining the influence of biological sex on peripheral nerve blockade's pharmacodynamic, pharmacokinetic, and morphometric characteristics. Minor revisions were suggested, including the replacement of "P<0.05" with significance levels in power calculations, specifying statistical methods for p-value estimation in the abstract, indicating the statistical testing method achieving 80% power, correcting a grammatical error related to Fisher's exact, stating the underlying covariance structure in linear mixed effects models, providing percentages for the left or right side in Table 1's "side" column, referencing the mathematical method for calculating AUC in line 219, adding sample sizes to the header row in Table 3, and reporting any adverse events during the study.

[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: Yes

Reviewer #2: Yes

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2. Has the statistical analysis been performed appropriately and rigorously?

Reviewer #1: Yes

Reviewer #2: Yes

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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

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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: Yes

Reviewer #2: Yes

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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: Volunteers participated in a clinical trial which aimed to investigate the impact of biological sex on pharmacodynamic, pharmacokinetic and morphometric characteristics for peripheral nerve blockade.

Minor revisions:

1- Abstract and line 197: Power calculations include significance levels rather than p-values. Replace “P<0.05” at all occurrences.

2- Abstract: Briefly state the statistical methods from which p-values were estimated.

3- Line 163: State the statistical testing method which achieves 80% power. Perhaps it is the t-test.

4- Lines 182 and 204: Grammatical error: Fisher’s exact.

5- Line 185: State the underlying covariance structure used in the linear mixed effects models and the criteria for selecting it.

6- Table 1: For side, provide the percentage corresponding to the left or right side.

7- Line 219: Provide a reference for the mathematical method used to calculate AUC.

8- Table 3: Include sample sizes in the header row.

9- Indicate if any adverse events occurred during the course of the study.

Reviewer #2: In the age of personalized medicine all details are important that makes a difference between individuals or interindividual differences can be excluded. This is the first human study investigating the impact of biological sex in peripheral nerve blockade. Regional anesthesia plays an important role not only during the surgery but in the postoperative period as well, and in other areas of medicine, including malignancies and obstetrics. Most of amid local anesthetics (including ropivacaine) are highly cardiotoxic compounds. The knowledge that higher peak serum levels may be expected in females may have importance in long term therapy using epidural catheters.

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Reviewer #1: No

Reviewer #2: Yes: István Bátai

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Revision 1

Please find our point-to-point answers to each point raised by the reviewers

concerning the manuscript for the research article with the title “The impact of biological sex in

peripheral nerve blockade: A prospective pharmacodynamic, pharmacokinetic and morphometric

study in volunteers”.

Reviewer #1: Volunteers participated in a clinical trial which aimed to

investigate the impact of biological sex on pharmacodynamic,

pharmacokinetic and morphometric characteristics for peripheral nerve

blockade.

Minor revisions:

1- Abstract and line 197: Power calculations include significance levels

rather than p-values. Replace “P<0.05” at all occurrences.

• Thank you very much for this comment. It is correct in that ‘’P<0.05’’ should be replaced in

power calculations and that this is specified better by the term ‘’alpha error of 5%’’, which

has been changed throughout as suggested.

2- Abstract: Briefly state the statistical methods from which p-values were estimated.

• Mann-Whitney U-statistics were used for the data in the abstract and this has been added as

suggested (line 34 and 35).

3- Line 163: State the statistical testing method which achieves 80% power. Perhaps it is the t-test.

• As requested by the reviewer, the unpaired Student t-statistic has been inserted for the

power calculation.

4- Lines 182 and 204: Grammatical error: Fisher’s exact.

• The grammatical error has been corrected.

5- Line 185: State the underlying covariance structure used in the linear

mixed effects models and the criteria for selecting it.

• In the used statistical software Stata, the covariance matrix is defaults to ‘’Identity’’ from

others for single-variable random-effects specifications in subjects. This has now been added

as suggested for completeness by the reviewer.

6- Table 1: For side, provide the percentage corresponding to the left or right side.

• For side, the percentage for the left side has been added in table 1 (left 83.3%).

7- Line 219: Provide a reference for the mathematical method used to calculate AUC.

• The mathematical method used was the trapezoid rule. The following text was inserted in

the manuscript “AUC, calculated according to the trapezoidal rule”.

8- Table 3: Include sample sizes in the header row.

• The sample sizes (Women, n=12 and Men, n=12) have been added in the header of table 3.

9- Indicate if any adverse events occurred during the course of the study.

• It has been indicated, that no adverse events occurred during the course of the study – line

232/233.

Reviewer #2: In the age of personalized medicine all details are important

that makes a difference between individuals or interindividual differences

can be excluded. This is the first human study investigating the impact of

biological sex in peripheral nerve blockade. Regional anesthesia plays an

important role not only during the surgery but in the postoperative period

as well, and in other areas of medicine, including malignancies and

obstetrics. Most of amid local anesthetics (including ropivacaine) are

highly cardiotoxic compounds. The knowledge that higher peak serum levels

may be expected in females may have importance in long term therapy using

epidural catheters.

• Thank you very much for this remark, appreciating our work.

Attachments
Attachment
Submitted filename: Response to Reviewers_Plos One_Sex differences_signed.pdf
Decision Letter - Lalit Gupta, Editor

The impact of biological sex in peripheral nerve blockade: A prospective pharmacodynamic, pharmacokinetic and morphometric study in volunteers

PONE-D-23-35478R1

Dear Dr. Zadrazil,

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 for payment will follow shortly after the formal acceptance. To ensure an efficient process, please log into Editorial Manager at http://www.editorialmanager.com/pone/, click the 'Update My Information' link at the top of the page, and double check that your user information is up-to-date. If you have any billing related questions, 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,

Lalit Gupta

Academic Editor

PLOS ONE

Additional Editor Comments (optional):

All the comments raised by the previous reviewer have been thoroughly addressed.

Upon careful reevaluation of the manuscript, it is evident that the revised version has significantly improved and is now deemed acceptable for acceptance.

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 #1: All comments have been addressed

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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 #1: (No Response)

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3. Has the statistical analysis been performed appropriately and rigorously?

Reviewer #1: (No Response)

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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 #1: (No Response)

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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: (No Response)

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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 #1: (No Response)

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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: No

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Formally Accepted
Acceptance Letter - Lalit Gupta, Editor

PONE-D-23-35478R1

PLOS ONE

Dear Dr. Zadrazil,

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.

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Thank you for submitting your work to PLOS ONE and supporting open access.

Kind regards,

PLOS ONE Editorial Office Staff

on behalf of

Dr. Lalit Gupta

Academic Editor

PLOS ONE

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