Frequencies for first 10,000 rows of ncmed7 variable in nhamcsopd2007 dataset :

      was medication 7 new or |
                   continued? |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                        blank |         56        0.56        0.56
               not applicable |      8,858       88.58       89.14
                          new |         94        0.94       90.08
                    continued |        992        9.92      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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