Frequencies for first 10,000 rows of prov3515 variable in pos1993 dataset :

 srv: blood |
admin-onsit |
e-residents |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,627       76.27       76.27
          N |      2,139       21.39       97.66
          Y |        234        2.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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