Frequencies for first 10,000 rows of prescr11 variable in nhamcsed2015 dataset 

        Prescription status code for |
                      medication #11 |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                   Prescription drug |        129        1.29        1.29
                Nonprescription drug |          4        0.04        1.33
                        Undetermined |          4        0.04        1.37
Prescription or Nonprescription drug |         39        0.39        1.76
                                   . |      9,824       98.24      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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