Frequencies for first 10,000 rows of ncmed4 variable in nhamcsopd2007 dataset :

      was medication 4 new or |
                   continued? |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                        blank |         88        0.88        0.88
               not applicable |      7,513       75.13       76.01
                          new |        328        3.28       79.29
                    continued |      2,071       20.71      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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