Frequencies for first 10,000 rows of noprovid variable in nhamcsopd1999 dataset :

  providers |
   seen: no |
  answer to |
       item |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,857       98.57       98.57
          1 |        143        1.43      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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