Frequencies for first 10,000 rows of prescr10 variable in nhamcsed2015 dataset 

        Prescription status code for |
                      medication #10 |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                   Prescription drug |        170        1.70        1.70
                Nonprescription drug |          6        0.06        1.76
                        Undetermined |          4        0.04        1.80
Prescription or Nonprescription drug |         62        0.62        2.42
                                   . |      9,758       97.58      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017