Frequencies for first 10,000 rows of prescr6 variable in namcs2014 dataset :

          Prescription status code for |
                         medication #6 |      Freq.     Percent        Cum.
---------------------------------------+-----------------------------------
                     Prescription drug |      1,478       14.78       14.78
                  Nonprescription drug |         89        0.89       15.67
                          Undetermined |         65        0.65       16.32
Both Prescription and Over-The-Counter |        614        6.14       22.46
                                     . |      7,754       77.54      100.00
---------------------------------------+-----------------------------------
                                 Total |     10,000      100.00

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