Frequencies for first 10,000 rows of prescr13 variable in namcs2014 dataset :

          Prescription status code for |
                        medication #13 |      Freq.     Percent        Cum.
---------------------------------------+-----------------------------------
                     Prescription drug |        268        2.68        2.68
                  Nonprescription drug |         29        0.29        2.97
                          Undetermined |         17        0.17        3.14
Both Prescription and Over-The-Counter |        147        1.47        4.61
                                     . |      9,539       95.39      100.00
---------------------------------------+-----------------------------------
                                 Total |     10,000      100.00

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