Frequencies for first 10,000 rows of ncmed2 variable in namcs2012 dataset :

      Is Medication #2 new or |
                   continued? |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                        Blank |         80        0.80        0.80
               Not applicable |      5,147       51.47       52.27
                          New |      1,454       14.54       66.81
                    Continued |      3,319       33.19      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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