Frequencies for first 10,000 rows of prescr16 variable in namcs2014 dataset :

          Prescription status code for |
                        medication #16 |      Freq.     Percent        Cum.
---------------------------------------+-----------------------------------
                     Prescription drug |        129        1.29        1.29
                  Nonprescription drug |          9        0.09        1.38
                          Undetermined |          3        0.03        1.41
Both Prescription and Over-The-Counter |         60        0.60        2.01
                                     . |      9,799       97.99      100.00
---------------------------------------+-----------------------------------
                                 Total |     10,000      100.00

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