Frequencies for first 10,000 rows of prescr23 variable in namcs2014 dataset :

          Prescription status code for |
                        medication #23 |      Freq.     Percent        Cum.
---------------------------------------+-----------------------------------
                     Prescription drug |         25        0.25        0.25
                  Nonprescription drug |          3        0.03        0.28
Both Prescription and Over-The-Counter |         10        0.10        0.38
                                     . |      9,962       99.62      100.00
---------------------------------------+-----------------------------------
                                 Total |     10,000      100.00

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