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

       Do you see |
  patients during |
the evening or on |
  weekends at the |
          office? |      Freq.     Percent        Cum.
------------------+-----------------------------------
          Unknown |         41        0.41        0.41
Refused to answer |          1        0.01        0.42
              Yes |      3,586       35.86       36.28
               No |      6,372       63.72      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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