Which key organization is responsible for oversight and approval of clinical trials in the United States, ensuring that they are conducted according to regulatory requirements to safeguard participant health and collect reliable data?

In a clinical trial, the variable 'TreatmentGroup' indicates whether a patient received the experimental drug (coded as 'Drug') or the placebo (coded as 'Placebo'). You have been tasked with reporting the frequency and percentage of patients in each treatment group. Which SAS procedure would allow you to obtain these specific statistics for categorical data?

A clinical trial analyst needs to create a Kaplan-Meier survival plot to visualize the time-to-event data for different treatment groups. Which PROC step should the analyst use, and what is the key statement to differentiate the treatment groups in the graph?

In a clinical study report using SAS, you need to capture attributes such as style elements associated with a Kaplan-Meier survival plot generated by PROC LIFETEST. You've enabled ODS TRACE. After running the procedure, which output object listed in the ODS trace output would you look into for the survival plot details?

A clinical trials programmer is tasked with creating a Kaplan-Meier survival plot with a log-rank test for comparing survival curves between two treatment groups. The dataset includes patient ID, treatment group, time to event or censor, and the event indicator. Which PROC step will they likely use to produce the required output?