Frequencies for first 10,000 rows of ncmed1 variable in nhamcsopd2009 dataset :

      was medication 1 new or |
                   continued? |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                        blank |        152        1.52        1.52
               not applicable |      3,236       32.36       33.88
                          new |      2,346       23.46       57.34
                    continued |      4,266       42.66      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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