Frequencies for first 10,000 rows of prescr17 variable in nhamcsed2014 dataset :

        Prescription status code for |
                      medication #17 |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                   Prescription drug |         25        0.25        0.25
                Nonprescription drug |          1        0.01        0.26
                        Undetermined |          1        0.01        0.27
Prescription or Nonprescription drug |          9        0.09        0.36
                                   . |      9,964       99.64      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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