Frequencies for first 10,000 rows of prov2110 variable in pos1992 dataset :

       srv: |
   coronary |
  care unit |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,851       88.51       88.51
          0 |        514        5.14       93.65
          1 |        605        6.05       99.70
          2 |         25        0.25       99.95
          3 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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