Frequencies for first 10,000 rows of prescr16 variable in nhamcsed2014 dataset :

        Prescription status code for |
                      medication #16 |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                   Prescription drug |         32        0.32        0.32
                Nonprescription drug |          5        0.05        0.37
                        Undetermined |          2        0.02        0.39
Prescription or Nonprescription drug |         11        0.11        0.50
                                   . |      9,950       99.50      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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