Rose, rose

 Identify and discuss the following:

• what is known/not known about the topic and the gap in knowledge the study is intended to fill.
• the research design, purpose of the study, and setting.
• information about the sample: 
  • method;
  • size;
  • inclusion/exclusion criteria,
  • attrition/loss to follow up/response rate, if any;
  • important characteristics of the sample.