Frequencies for first 10,000 rows of prov2470 variable in pos1993 dataset :

  srv: self |
  care unit |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,856       88.56       88.56
          0 |      1,117       11.17       99.73
          1 |         12        0.12       99.85
          2 |          9        0.09       99.94
          3 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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