Frequencies for first 10,000 rows of telconr variable in namcs2002 dataset :

       Does |
  physician |
         do |
  telephone |
  consults? |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      2,850       28.50       28.50
        Yes |      5,839       58.39       86.89
      Blank |      1,311       13.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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