Frequencies for first 10,000 rows of prov3515 variable in pos2009 dataset :

 SRV: BLOOD |
ADMIN-ONSIT |
E-RESIDENTS |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,657       76.57       76.57
          N |      2,062       20.62       97.19
          Y |        281        2.81      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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