Frequencies for first 10,000 rows of ncmed7 variable in nhamcsopd2011 dataset :

      Was medication 7 new or |
                   continued? |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                        Blank |         39        0.39        0.39
               Not applicable |      8,750       87.50       87.89
                          New |        127        1.27       89.16
                    Continued |      1,084       10.84      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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