Frequencies for first 10,000 rows of wt_cod variable in demo2009q4 dataset :

       Unit |
abbreviatio |
      n for |
  patient's |
     weight |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,005       70.05       70.05
        GMS |          1        0.01       70.06
         KG |      2,731       27.31       97.37
        LBS |        263        2.63      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Dec 2015