Frequencies for first 10,000 rows of ncmed5 variable in nhamcsopd2006 dataset :

      was medication 5 new or |
                   continued? |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                          New |        181        1.81        1.81
                    Continued |      1,185       11.85       13.66
               Not applicable |      8,558       85.58       99.24
                        Blank |         76        0.76      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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