Frequencies for first 10,000 rows of prov2315 variable in pos1995 dataset :

 srv: organ |
 transplant |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,933       89.33       89.33
          0 |        950        9.50       98.83
          1 |         35        0.35       99.18
          2 |         78        0.78       99.96
          3 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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