Frequencies for first 10,000 rows of hivstdtr variable in nhamcsopd1997 dataset :

    hiv/std |
transmissio |
          n |
 couns/educ |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,722       97.22       97.22
          1 |        278        2.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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