Frequencies for first 10,000 rows of prescr17 variable in namcs2014 dataset :

          Prescription status code for |
                        medication #17 |      Freq.     Percent        Cum.
---------------------------------------+-----------------------------------
                     Prescription drug |        112        1.12        1.12
                  Nonprescription drug |          8        0.08        1.20
                          Undetermined |          2        0.02        1.22
Both Prescription and Over-The-Counter |         35        0.35        1.57
                                     . |      9,843       98.43      100.00
---------------------------------------+-----------------------------------
                                 Total |     10,000      100.00

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