Frequencies for first 10,000 rows of prescr6 variable in namcs2011 dataset :

   Medication #6 - Prescription status |
                                  code |      Freq.     Percent        Cum.
---------------------------------------+-----------------------------------
                     Prescription drug |      1,292       12.92       12.92
                  Nonprescription drug |         49        0.49       13.41
                          Undetermined |         32        0.32       13.73
Both Prescription and Over-The-Counter |        378        3.78       17.51
                                     . |      8,249       82.49      100.00
---------------------------------------+-----------------------------------
                                 Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016