Frequencies for first 10,000 rows of ncmed2 variable in nhamcsopd2009 dataset :

      was medication 2 new or |
                   continued? |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                        blank |        140        1.40        1.40
               not applicable |      5,110       51.10       52.50
                          new |      1,306       13.06       65.56
                    continued |      3,444       34.44      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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