Time series data and tsset. To use Stata's time-series functions and analyses, you must first make sure that your data are, indeed, time-series. First, you must have a date variable that is in Stata date format. Secondly, you must make sure that your data are sorted by this date variable.
Patients were randomly assigned to either a control condition (opioid analgesia alone) or anxiolytic condition (opioid analgesia+lorazepam) and then asked to report their worst procedural pain for 4 consecutive days: a 2-day baseline period and a 2-day post-treatment period.
The use of lorazepam with drugs like opioid medications has led to serious side effects including slowed and difficulty breathing and death. Opioid drugs are medications used to treat pain and include medications such as: codeine, oxycodone, morphine, and illegal drugs like heroin.