Basic reporting The English language should be improved to ensure that an international audience can clearly understand your text. Some examples where the language could be improved include line 254 – the current phrasing makes comprehension difficult (the term "Insignificantly").

In discussion, when the authors describe possible solutions I suggest you to cite these references: Chirico F, Nucera G, Magnavita N. Protecting the mental health of healthcare workers during the COVID-19 emergency. BJ Psych International. 2020. 1-6. Doi: 10.1192/bji.2020.39, about the occupational health surveillance programs at workplace and the citation "Chirico F, Nucera G. An Italian Experience of Spirituality from the Coronavirus Pandemic. J Relig Health. 2020 Oct;59(5):2193-2195. https://doi.org/10.1007/s10943-020-01036-1"; about spiritual skill coping means. Experimental design In methods the authors should give more details about independent variables (sleeping disorder, mental health problems), on how they code and measure these variables Validity of the findings Findings are correct. Please, add the limitations of your study Comments for the Author Please, revise my comments. Furthermore, I suggest to improve for clarity and grammar the presentation of the work.

Basic reporting 1) There are still some minor typos (e.g. in introduction: "Over the last decade, mental 56 health problems increased by 13% worldwide WHO, [1]. " "The most common mental health conditions are 57 depression and anxiety which cost approximately US $ 1 trillion yearly from the global economy see 58 WHO, Mental Health, [2]." "Therefore, studies in this filed are needed.." 2) Some sentenced in introduction need to be referenced. "The spread of COVID-19 pandemic caused huge stress on general population, however, the case was worse for healthcare workers due to their close interaction with COVID-19 patients". "Frontline healthcare workers (HCWs) are dealing with suspected and positive cases of COVID-19 patients on daily basis which puts them at high risk of infection and death" (you can cite: Chirico F, Magnavita N. Covid-19 infection in Italy: An occupational injury. S Afr Med J. 2020 May 8;110(6):12944. Doi: 10.7196/SAMJ.2020.v110i6.14855." "Such exposure has a substantial impact on their mental health" (you may cite: Chirico F, Nucera G, Magnavita N. Protecting the mental health of healthcare workers during the COVID-19 emergency. BJ Psych International. 2020. 1-6. Doi: 10.1192/bji.2020.39" Experimental design Aim of the research is clear. Methods are rigorous and are well described Validity of the findings All data sound statisticall robust

Basic reporting English language could be improved There are typographical mistakes (e.g. filed instead of field in the introduction), "The soci-demographic profile" in methods As suggested, background/context on mental health in HCWs should be improved (Cite:Chirico F, Nucera G. Tribute to healthcare operators threatened by COVID-19 pandemic. J Health Soc Sci. 2020;5(2):165-168. 10.19204/2020/trbt1. Chirico F, Nucera G, Magnavita N. Protecting the mental health of healthcare workers during the COVID-19 emergency. BJ Psych International. 2020. 1-6. Doi: 10.1192/bji.2020.39. Pappa S, Ntella V, Giannakas T, Giannakoulis VG, Papoutsi E, Katsaounou P. Prevalence of depression, anxiety, and insomnia among healthcare workers during the COVID-19 pandemic: A systematic review and meta-analysis. Brain Behav Immun. 2020 Aug;88:901-907. doi: 10.1016/j.bbi.2020.05.026. Epub 2020 May 8. Erratum in: Brain Behav Immun. 2021 Feb;92:247.) Experimental design The authors have addressed all my previous comments Validity of the findings The authors have addressed all my previous comments Comments for the Author Please, address some minor suggestions in introduction and revise the english language that may be improved.

Basic reporting The authors have addressed all my comments Experimental design The authors have addressed all my comments Validity of the findings The authors have addressed all my comments Comments for the Author Congratulations! it's a good work!