Frequencies for first 10,000 rows of stdprev variable in namcs2015 dataset :

        STD |
 prevention |
educ/counse |
       ling |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,954       99.54       99.54
          1 |         46        0.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 25 Oct 2017