Frequencies for first 10,000 rows of prov3520 variable in pos2000 dataset :

 srv: blood |
admin-onsit |
   e-nonres |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,362       73.62       73.62
          N |      2,611       26.11       99.73
          Y |         27        0.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017