Frequencies for first 10,000 rows of prvdr_num variable in posclia2013 dataset 

   Provider |
   Number / |
        CMS |
Certificati |
  on Number |
      (CCN) |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |     10,000      100.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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