Frequencies for first 10,000 rows of prescr7 variable in nhamcsopd2011 dataset :

Prescription status code for Medication |
                                     #7 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                      Prescription drug |        866        8.66        8.66
                   Nonprescription drug |         54        0.54        9.20
                           Undetermined |         31        0.31        9.51
Both prescription and OTC (over the cou |        299        2.99       12.50
                                      . |      8,750       87.50      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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