Frequencies for first 10,000 rows of prescr10 variable in namcs2012 dataset :

          Prescription status code for |
                        medication #10 |      Freq.     Percent        Cum.
---------------------------------------+-----------------------------------
                     Prescription drug |        309        3.09        3.09
                  Nonprescription drug |         25        0.25        3.34
                          Undetermined |         17        0.17        3.51
Both Prescription and Over-The-Counter |        149        1.49        5.00
                                     . |      9,500       95.00      100.00
---------------------------------------+-----------------------------------
                                 Total |     10,000      100.00

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