Frequencies for first 10,000 rows of comstat4 variable in nhamcsed2002 dataset :

composition |
status code |
for drug #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,013       10.13       10.13
          2 |        130        1.30       11.43
          3 |         49        0.49       11.92
          . |      8,808       88.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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