Frequencies for first 10,000 rows of ncmed2 variable in namcs2007 dataset :

      was medication 2 new or |
                   continued? |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                        blank |        248        2.48        2.48
               not applicable |      4,852       48.52       51.00
                          new |      1,820       18.20       69.20
                    continued |      3,080       30.80      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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