Frequencies for first 10,000 rows of prov2315 variable in pos1994 dataset :

 srv: organ |
 transplant |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,940       89.40       89.40
          0 |        942        9.42       98.82
          1 |         35        0.35       99.17
          2 |         77        0.77       99.94
          3 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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