Frequencies for first 10,000 rows of prov3515 variable in pos1992 dataset :

 srv: blood |
admin-onsit |
e-residents |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,366       73.66       73.66
          N |      2,394       23.94       97.60
          Y |        240        2.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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