Frequencies for first 10,000 rows of gpmed2 variable in nhamcsed2010 dataset :

      Given in ED or RX at discharge |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                               blank |         72        0.72        0.72
not applicable, no medication listed |      4,542       45.42       46.14
                        given in  ed |      3,146       31.46       77.60
                     rx at discharge |      1,689       16.89       94.49
            both given and rx marked |        551        5.51      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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