Frequencies for first 10,000 rows of prescr11 variable in nhamcsed2014 dataset :

        Prescription status code for |
                      medication #11 |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                   Prescription drug |        101        1.01        1.01
                Nonprescription drug |          3        0.03        1.04
                        Undetermined |          3        0.03        1.07
Prescription or Nonprescription drug |         42        0.42        1.49
                                   . |      9,851       98.51      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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