Frequencies for first 10,000 rows of gpmed2 variable in nhamcsed2006 dataset :

   med 2 given in ed or rx at discharge |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
             medication was given in ed |      2,476       24.76       24.76
medication was prescribed (rx) at disch |      1,780       17.80       42.56
medication was both given in ed and rx  |        450        4.50       47.06
                 na (no drug mentioned) |      5,160       51.60       98.66
                                  blank |        134        1.34      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016