Frequencies for first 10,000 rows of eprolstr variable in namcs2013 dataset :

     If computerized patient |
     history and demographic |
       info, does it include |
                  patient pr |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                     Unknown |         53        0.53        0.53
              Not applicable |      1,647       16.47       17.00
           Refused to answer |         15        0.15       17.15
                         Yes |      7,855       78.55       95.70
                          No |        397        3.97       99.67
Yes, but turned off/not used |         33        0.33      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017