the aim of the study was clear, what found in the study also clear and the abstract was informative. the title was relative, informative and clear. the references are organized, relevant but most of them not recent, and very old need to be updated.

Comments on introduction/background

in this paper the author is explain clearly what is already known about this topic, and answer the research question clearly outlined.

Comments on methodology

most of the variables defined here were measured appropriately and the study methods valid and reliable. there is enough detail to replicate the study.

Comments on data and results

the result was clear and well organized, well analyzed, presented in an appropriate way, tables and figures relevant and clearly presented. Titles, columns, and rows labelled correctly and clearly. the text in the results add to the data or is it repetitive.

Comments on discussion and conclusions

the results discussed from multiple angles and placed into context without being overinterpreted, the conclusions answer the aims of the study.

Major points in the article which needs clarification and suggestions for what could be done to improve the article.

only the references need to be updated.