Frequencies for first 10,000 rows of prescr4 variable in namcs2014 dataset :

          Prescription status code for |
                         medication #4 |      Freq.     Percent        Cum.
---------------------------------------+-----------------------------------
                     Prescription drug |      2,465       24.65       24.65
                  Nonprescription drug |        131        1.31       25.96
                          Undetermined |         86        0.86       26.82
Both Prescription and Over-The-Counter |        822        8.22       35.04
                                     . |      6,496       64.96      100.00
---------------------------------------+-----------------------------------
                                 Total |     10,000      100.00

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