I'm having trouble answering these questions for this article:

Here is the link for this article:

Naovarat, B. S., Reveille, J. D., Salazar, G. A., Williams, F. M., & Nguyen, B. Y. (2020). Systemic lupus erythematosus in the setting of HIV-1 infection: A longitudinal analysis.Clinical Rheumatology, 39 (2),1-6. http://doi.org/10.1007/s10067-019-04867-w

Here are the questions; I'm completely lost:

2- to 3-paragraph evaluation of the published study

Describe how you think the research in the article is useful (e.g., what population is it helping? What problem is it solving?)

An explanation of the study's design and methods. Include and identification of the study's independent (including covariates) and dependent variables using Y=f(X)+E notation (one covariant = met; 2-3 = exceeds). Also include an explanation of the importance of covariates. What is the role of each in the context of this example?

An evaluation of whether the selected study design, methods, and secondary data sources were the most appropriate for addressing the gap in the study.