Frequencies for first 10,000 rows of noprovid variable in nhamcsopd2002 dataset :

  no answer |
to provider |
       item |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,870       98.70       98.70
          1 |        130        1.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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