Frequencies for first 10,000 rows of prov3500 variable in pos2006 dataset :

       srv: |
xray-onsite |
 -residents |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,456       74.56       74.56
          N |        528        5.28       79.84
          Y |      2,016       20.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016