Frequencies for first 10,000 rows of prov2080 variable in pos1993 dataset :

 srv: blood |
       bank |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,856       88.56       88.56
          0 |        266        2.66       91.22
          1 |        550        5.50       96.72
          2 |        285        2.85       99.57
          3 |         43        0.43      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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