Frequencies for first 10,000 rows of prov2315 variable in pos2004 dataset :

 srv: organ |
 transplant |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,766       87.66       87.66
          0 |      1,070       10.70       98.36
          1 |         43        0.43       98.79
          2 |        117        1.17       99.96
          3 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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