Frequencies for first 10,000 rows of prescr19 variable in namcs2014 dataset :

          Prescription status code for |
                        medication #19 |      Freq.     Percent        Cum.
---------------------------------------+-----------------------------------
                     Prescription drug |         54        0.54        0.54
                  Nonprescription drug |          7        0.07        0.61
                          Undetermined |          3        0.03        0.64
Both Prescription and Over-The-Counter |         37        0.37        1.01
                                     . |      9,899       98.99      100.00
---------------------------------------+-----------------------------------
                                 Total |     10,000      100.00

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