Frequencies for first 10,000 rows of noprovid variable in nhamcsopd2008 dataset :

  no answer |
to provider |
       item |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,896       98.96       98.96
        yes |        104        1.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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