Frequencies for first 10,000 rows of ncmed1 variable in namcs2009 dataset :

      was medication 1 new or |
                   continued? |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                        blank |        172        1.72        1.72
               not applicable |      2,046       20.46       22.18
                          new |      3,676       36.76       58.94
                    continued |      4,106       41.06      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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