Abstract, title and references:

1. The abstract follows a recognised style of Introduction, Methods, Results, and Conclusion. The abstract presents the aim of the study, methods, and data analysis. The title and the abstract match and inform complete information about the contents. Abstract briefly present the key finding, such as the percentage of bullying and the most common form of bullying.
2. Most of the important point adequately referenced.
3. Few errors of references are available. For example, on page 2, study population and ethical approval section, paragraph 1, the citation no. 23 is written by Chen et al, but in the list of reference is written Chan et al 2017. A reference (no. 24) needs to be updated. This would be better if the references should be with 5 years later as considering recent articles may provide up to date information. Furthermore, using an automatic referencing system will help to cite easily and prevent unintentional plagiarisms

Introduction or background:

1. The introduction starts with a good broad research area and clearly states the aims of the study.
2. Existing literature were well-cited supporting statements and provides adequate explanation or context for the past studies leading to a problem statement. However, the research questions and the importance of the study are not well-explained.

Methods:

1. The method outlines the study population and ethical approval, study measures, and data analysis. This study clearly explains the research design that is used to answer the aim of the study. The sampling, the inclusion criteria, variables and data analysis are well-discussed meeting the standard of research integrity.
2. This study is equipped with ethical approval (ref no. EA/6041/2019) that adheres to ethical norms supporting social and moral values for respondents.
3. This study adopted existing instruments for measuring variables and those instruments were measured their validity meeting three aspects of the face, construct and content validity (paragraph 2, on page 3). Like validity, this study would be better if the author also informs how the reliability is assessed.
4. This study may potential to be replicated because of using structured instruments with validity. This study was also based on larger sample sizes (n=1131 respondents) representing the population that may generalise the results.

Results:

1. This study provides several results addressing the aim of the study. Most of the table are relevant and clearly presented except table 1. Table 1, on page 4, the total percentage of the data unit is not appropriate (such as total percentage of child acted as the bully is 100,1%); the forms of bullying is also not available in columns and rows as it is one of the aims of the study. Consequently, there is an inconsistency between data table 1 and the description of the table. The text, on page 4, does not refer to any tables provided. For example, “the majority (87.3%) of bully-victims were bullied by a group 2-5 students”. What do you mean by a group of 2-5 students? Similarly, on page 2, the author described “physical bullying … verbally bullying and cyberbullying (51%). This would be better if forms of bullying are included in the table. A reformatting table is needed that may deliver consistent information.
2. Table tittles are also clearly written.

Discussion and Conclusions:

1. The discussion section discusses the results answering the aim of the study. For example, the result of the associated physical and dentofacial features are interpreted and discussed in a manner by incorporating significant findings at once meeting the aim of study number 3.
2. However, how other results address other aims of the study need to be enhanced. For example, in paragraph 3, on page 9, the author presents that bullying is highly prevalent in Saudi Arabia, and this result supports other previous studies. This would be better if the author discusses the results from multiple angles preventing superficial discussion. For example, significant findings of the prevalence of bullying, forms of bullying and associated socio-demographic factors are interpreted and discussed. The result found the significant findings that physical findings that are more likely to occur in the age group of 8-11 years, in the public school as well as the association between bullying sociodemographic of parents (i.e., educational level, parental occupation, family income). These s need to be interpreted and need to be discussed, why? without over being overinterpreted.
3. On page 9, paragraph 1-2 explicitly informed the reasons for involving parents and questionnaires leading to suggestion for the study. Meanwhile, paragraph 3 discusses the prevalence of bullying, its form and socio-demographic. This would be better if this paragraph 3 moves to paragraph 1 and the information of paragraph 1-2 embedded within.
4. Overall, the writing is clear and concise that is easy to understand. Limitations of the study have been acknowledged and suggestions for future research also addressed.
5. The conclusion is addressed; however, synthesising the findings addressing the aims of the study may be better than restating the data, please see page 11, conclusion section lines 2-3.

Overall, the article answers the aims of the study. The ranges of information for methods such as research design, sampling process, valid instruments, data analysis and ethical approval are available. This study also addresses the gap from existing literature.

This is a good piece of an article containing several aims of the study that are determining the prevalence of bullying, types of bullying and associated socio-demographic factors; determining the impact of bullying on academic abilities, school attendance, and dentofacial features condition among children aged 8 to 18 years old in Saudi Arabia. This study found the high prevalence of bully-victims were occurred by group children aged 8-11 years old, had nicknames, were from public universities, parents with a university background, working parents in the education sector high family income, and those children live in the central residence region in the Kingdom. Unfortunately, the forms of bullying are not well-presented in the table. Most bully-victims hated their school class, truant the schools, absence from school, effect on school grades, and extend bullying due to good grades. Then, bullying is associated with dentofacial features that are more likely to occur in grouped children aged 8-11 years. The highest features include teeth, the shape of lips, strength, weight, shape of chin and length. Limitation and further research are justified. The author shows familiarity with the topic and presents a written article in an appropriate format.

The topic of the article is interesting and still relevant to this current situation. The article is presented in a professional manner. This study described in a detailed manner how the study is conducted (i.e., research design, sampling process, valid instruments) equipped with ethical approval and large sample sizes. I find that this work modifies previous knowledge and provides a significant result to the research community accompanied by a proper exposition.

However, minor points like data values not being mentioned in the table need to be reformatted, such as forms of bullying. The significant key findings of the prevalence of bullying, its forms and associated with the sociodemographic need to be interpreted and discussed inappropriate way. Few errors of references need to be revised and this would be better if the author used automatic referencing. Some old references need to be up to date. Then, consistency in writing in response to the sampling process, the type of research design used, defined variables need to be detailed. These points would benefit to improve the quality of the article.