Frequencies for first 10,000 rows of uld_febr variable in natlterr2006 dataset :

Febrile RFP |
711=f_uld_f |
   ebrile U |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      3,725       37.25       37.25
          1 |         25        0.25       37.50
          2 |      4,709       47.09       84.59
          9 |      1,541       15.41      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015