Frequencies for first 10,000 rows of prov5675 variable in pos1999 dataset :

 srv: blood |
       bank |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,885       88.85       88.85
          0 |        291        2.91       91.76
          1 |        515        5.15       96.91
          2 |        262        2.62       99.53
          3 |         47        0.47      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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