Frequencies for first 10,000 rows of comstat7 variable in nhamcsed2009 dataset :

   for rx7, |
composition |
status code |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        234        2.34        2.34
          2 |         28        0.28        2.62
          3 |          5        0.05        2.67
          . |      9,733       97.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016