Frequencies for first 10,000 rows of prov3525 variable in pos1998 dataset :

 srv: blood |
admin-offsi |
te-resident |
          s |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,422       74.22       74.22
          N |      2,291       22.91       97.13
          Y |        287        2.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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