Frequencies for first 10,000 rows of prescr8 variable in namcs2013 dataset :

          Prescription status code for |
                         medication #8 |      Freq.     Percent        Cum.
---------------------------------------+-----------------------------------
                     Prescription drug |        848        8.48        8.48
                  Nonprescription drug |         46        0.46        8.94
                          Undetermined |         28        0.28        9.22
Both Prescription and Over-The-Counter |        329        3.29       12.51
                                     . |      8,749       87.49      100.00
---------------------------------------+-----------------------------------
                                 Total |     10,000      100.00

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