Frequencies for first 10,000 rows of prescr6 variable in nhamcsed2014 dataset :

        Prescription status code for |
                       medication #6 |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                   Prescription drug |        525        5.25        5.25
                Nonprescription drug |         22        0.22        5.47
                        Undetermined |         15        0.15        5.62
Prescription or Nonprescription drug |        244        2.44        8.06
                                   . |      9,194       91.94      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 Apr 2017