Frequencies for first 10,000 rows of prescr17 variable in nhamcsed2015 dataset 

        Prescription status code for |
                      medication #17 |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                   Prescription drug |         38        0.38        0.38
                Nonprescription drug |          2        0.02        0.40
                        Undetermined |          1        0.01        0.41
Prescription or Nonprescription drug |         10        0.10        0.51
                                   . |      9,949       99.49      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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