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.
Lorazepam is used to treat anxiety. This medicine is a benzodiazepine. Benzodiazepines belong to the group of medicines called central nervous system (CNS) depressants, which are medicines that slow down the nervous system. This medicine is available only with your doctor's prescription.