Frequencies for first 10,000 rows of prov5675 variable in pos1998 dataset :

 srv: blood |
       bank |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,805       88.05       88.05
          0 |        294        2.94       90.99
          1 |        552        5.52       96.51
          2 |        298        2.98       99.49
          3 |         51        0.51      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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