Frequencies for first 10,000 rows of cstratm variable in nhamcsed2012 dataset :

  Clustered |
 CSTRATM -- |
     masked |      Freq.     Percent        Cum.
------------+-----------------------------------
   1.01e+07 |        350        3.50        3.50
   1.02e+07 |        988        9.88       13.38
   1.03e+07 |        210        2.10       15.48
   1.04e+07 |        607        6.07       21.55
   1.05e+07 |        334        3.34       24.89
   1.06e+07 |        180        1.80       26.69
   2.01e+07 |      2,847       28.47       55.16
   2.02e+07 |        905        9.05       64.21
   4.01e+07 |      1,615       16.15       80.36
   4.02e+07 |      1,964       19.64      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016