Frequencies for first 10,000 rows of srgcl_icu_srvc_desc variable in pos2008 dataset :

 srv: icu - |
   surgical |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,655       86.55       86.55
          0 |      1,271       12.71       99.26
          1 |         66        0.66       99.92
          2 |          4        0.04       99.96
          3 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017