Frequencies for first 10,000 rows of gpmed4 variable in nhamcsed2010 dataset :

      Given in ED or RX at discharge |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                               blank |         38        0.38        0.38
not applicable, no medication listed |      8,075       80.75       81.13
                        given in  ed |      1,114       11.14       92.27
                     rx at discharge |        688        6.88       99.15
            both given and rx marked |         85        0.85      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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