Frequencies for first 10,000 rows of cross_rfrnc_prvdr_num variable in posclia2016 dataset :

CROSS_REF_P |
ROVIDER_NUM |
        BER |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      9,999       99.99       99.99
     221890 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 10 Jan 2017