Frequencies for first 10,000 rows of cstratm variable in nhamcsed2014 dataset :

  Clustered |
 CSTRATM -- |
     masked |      Freq.     Percent        Cum.
------------+-----------------------------------
   2.01e+07 |      2,976       29.76       29.76
   2.02e+07 |      2,580       25.80       55.56
   2.03e+07 |      2,113       21.13       76.69
   2.04e+07 |      2,331       23.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 Apr 2017