Frequencies for first 10,000 rows of prescr5 variable in namcs2014 dataset :

          Prescription status code for |
                         medication #5 |      Freq.     Percent        Cum.
---------------------------------------+-----------------------------------
                     Prescription drug |      1,940       19.40       19.40
                  Nonprescription drug |        102        1.02       20.42
                          Undetermined |         64        0.64       21.06
Both Prescription and Over-The-Counter |        686        6.86       27.92
                                     . |      7,208       72.08      100.00
---------------------------------------+-----------------------------------
                                 Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017