Frequencies for first 10,000 rows of prescr11 variable in namcs2014 dataset :

          Prescription status code for |
                        medication #11 |      Freq.     Percent        Cum.
---------------------------------------+-----------------------------------
                     Prescription drug |        480        4.80        4.80
                  Nonprescription drug |         41        0.41        5.21
                          Undetermined |         18        0.18        5.39
Both Prescription and Over-The-Counter |        232        2.32        7.71
                                     . |      9,229       92.29      100.00
---------------------------------------+-----------------------------------
                                 Total |     10,000      100.00

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