Frequencies for first 10,000 rows of ncmed6 variable in nhamcsopd2006 dataset :

      was medication 6 new or |
                   continued? |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                          New |        110        1.10        1.10
                    Continued |        878        8.78        9.88
               Not applicable |      8,946       89.46       99.34
                        Blank |         66        0.66      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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