Frequencies for first 10,000 rows of ncmed4 variable in namcs2008 dataset :

      was medication 4 new or |
                   continued? |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                        blank |         96        0.96        0.96
               not applicable |      7,184       71.84       72.80
                          new |        492        4.92       77.72
                    continued |      2,228       22.28      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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