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.
My experience with Ativan (lorazepam) has been one I've come to love and set the bar high when it comes to sleep. I developed insomnia as a result of having to take opioid medication for my CRPS/RSD in addition of the fact that I'm slowly recovering from the death of my best friend who passed in 2010.