Frequencies for first 10,000 rows of icu_srvc_desc variable in pos2012 dataset 

   Services |
  Provided: |
        ICU |
Medical/Sur |
 gical Desc |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |     10,000      100.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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