Frequencies for first 10,000 rows of ncmed7 variable in nhamcsopd2009 dataset :

      was medication 7 new or |
                   continued? |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                        blank |         29        0.29        0.29
               not applicable |      8,724       87.24       87.53
                          new |        136        1.36       88.89
                    continued |      1,111       11.11      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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