Frequencies for first 10,000 rows of prov3515 variable in pos1999 dataset :

 srv: blood |
admin-onsit |
e-residents |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,387       73.87       73.87
          N |      2,312       23.12       96.99
          Y |        301        3.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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