Frequencies for first 10,000 rows of telconr variable in namcs2006 dataset :

during last |
  normal wk |
         of |
  practice, |
did phys do |
        tel |
   consults |
w/patients? |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      3,834       38.34       38.34
        yes |      5,259       52.59       90.93
      blank |        907        9.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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