Frequencies for first 10,000 rows of ncmed4 variable in namcs2007 dataset :

      was medication 4 new or |
                   continued? |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                        blank |         98        0.98        0.98
               not applicable |      7,566       75.66       76.64
                          new |        440        4.40       81.04
                    continued |      1,896       18.96      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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