A researcher is interested in describing the survival rates of patients who had a cardiac arrest prior to admission. Which component is missing?

Research design refers to the overall framework of the study, determining how the research is structured and how data will be collected. While a solid research design is critical for the study's success, the specific missing component in the context of analyzing survival rates is the analysis plan, which details the method of data interpretation rather than data collection itself.

Data collection involves gathering information from patients about their cardiac arrest and subsequent survival. While essential for any study, data collection is not the missing component here, as the question focuses on the strategies for analyzing the collected data rather than how it is obtained.

The study sample refers to the specific group of patients included in the research. While defining the study sample is important for generalizability and the validity of study results, it does not directly relate to the analytical process needed to assess survival rates, which is where the analysis plan comes into play.