Frequencies for first 10,000 rows of prescr8 variable in nhamcsopd2011 dataset :

Prescription status code for Medication |
                                     #8 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                      Prescription drug |        658        6.58        6.58
                   Nonprescription drug |         33        0.33        6.91
                           Undetermined |         18        0.18        7.09
Both prescription and OTC (over the cou |        240        2.40        9.49
                                      . |      9,051       90.51      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016