Frequencies for first 10,000 rows of prov5675 variable in pos2008 dataset :

 srv: blood |
       bank |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,655       86.55       86.55
          0 |        357        3.57       90.12
          1 |        596        5.96       96.08
          2 |        311        3.11       99.19
          3 |         81        0.81      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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