Frequencies for first 10,000 rows of ncmed7 variable in nhamcsopd2005 dataset :

      was medication 7 new or |
                   continued? |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                          new |        103        1.03        1.03
                    continued |        506        5.06        6.09
               not applicable |      9,376       93.76       99.85
                        blank |         15        0.15      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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