Frequencies for first 10,000 rows of ncmed1 variable in nhamcsopd2010 dataset :

      was medication 1 new or |
                   continued? |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                        blank |        165        1.65        1.65
               not applicable |      2,874       28.74       30.39
                          new |      2,939       29.39       59.78
                    continued |      4,022       40.22      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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