Frequencies for first 10,000 rows of ncmed6 variable in nhamcsopd2005 dataset :

      was medication 6 new or |
                   continued? |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                          new |        139        1.39        1.39
                    continued |        690        6.90        8.29
               not applicable |      9,150       91.50       99.79
                        blank |         21        0.21      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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