_dta:
  1.  patientchange set up by Jean Roth , jroth@nber.org , 8 Oct 2015
  2.  MAUDE Patient data updates:  changes to existing Base data

  obs:         5,361                          
 vars:             4                          8 Oct 2015 10:36
 size:       321,660                          (_dta has notes)
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              storage   display    value
variable name   type    format     label      variable label
----------------------------------------------------------------------------------------------------------------------------------------
mdr_report_key  long    %12.0g                Medical Device Reporting (MDR) Report Key
patient_sequence_number
                byte    %8.0g                 Patient Sequence Number (from patient report table)
sequence_number_treatment
                str51   %51s                  Sequence Number||','|| Treatment -- multiple source type, separate by ';'
seqsequence_number_treatment
                float   %9.0g                 # of sequence_number_treatment
----------------------------------------------------------------------------------------------------------------------------------------
Sorted by:  mdr_report_key  patient_sequence_number  seqsequence_number_treatment