Reviewer’s report
Title: Effect of a short-term vitamin E supplementation on oxidative stress in infertile PCOS women
under ovulation induction: A retrospective cohort study
Version: 1 Date: 08 Aug 2019
Reviewer: Vincenzo De Leo
Reviewer's report:
The study is interesting and well organized. The data are explained clearly. The results are useful for
the daily management of patients with PCOS who are trying to become pregnant. The tables and
figures are well understood and supportive in reading.
English is good.
The re-reading of the text would be indicated to correct some typing errors.
Some specific comments below:
Pag 8 line 175 correct the word "Table"
Pag 9 line 179 it would be useful ti write "On the whole, 965 cycles were studied in 321 patients: 345
cycles in group A (110 patients), 292 cycles in group B (105 patients) and 328 cycles in group C (106
patients)."
Pag. 9 line 187 correct "patients"
Pag 11, line 226 It would be useful to explain the results of the aforementioned study (bibliography n °
24) and provide a possible explanation on the discrepancy of the results with your study.
Are the methods appropriate and well described?
If not, please specify what is required in your comments to the authors.
Yes
Does the work include the necessary controls?
If not, please specify which controls are required in your comments to the authors.
Yes
Are the conclusions drawn adequately supported by the data shown?
If not, please explain in your comments to the authors.
Yes
Are you able to assess any statistics in the manuscript or would you recommend an additional
statistical review?
If  an  additional  statistical  review  is  recommended,  please  specify  what  aspects  require  further
assessment in your comments to the editors.
Not relevant to this manuscript
Quality of written English
Please indicate the quality of language in the manuscript:
Acceptable
Declaration of competing interests
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