Frequencies for first 10,000 rows of prescr13 variable in nhamcsed2014 dataset :

        Prescription status code for |
                      medication #13 |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                   Prescription drug |         64        0.64        0.64
                Nonprescription drug |          4        0.04        0.68
                        Undetermined |          1        0.01        0.69
Prescription or Nonprescription drug |         23        0.23        0.92
                                   . |      9,908       99.08      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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