Frequencies for first 10,000 rows of prov2470 variable in pos1997 dataset :

  srv: self |
  care unit |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,792       87.92       87.92
          0 |      1,189       11.89       99.81
          1 |          8        0.08       99.89
          2 |          8        0.08       99.97
          3 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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